Visidata

Major changes
- [cosmetic] change default column separators
- [json] make json load/save key order same as column order (ensures round-trip 429)
- [commands.tsv] remove commands.tsv; move helpstr into code

Major features
- add Split Window
- options.disp_splitwin_pct (default: 0) controls height of second sheet on screen
- add .vdj for cmdlog in jsonl format
- add plugins/bazaar.jsonl for PluginsSheet in jsonl format

new commands
- `splitwin-half` (`Shift+Z`) -- split screen, show sheet under top sheet
- `splitwin-close` (`g Shift+Z`) -- closes split screen, current sheet full screens
- `splitwin-swap` (`TAB`) -- swap to other pane
- `splitwin-input` (`z Shift+Z`) -- queries for height of split window
- `repeat-last` (unbound) -- run the previous cmd longname with any previous input (thanks visidata for feature request! 441)
- `repeat-input` (unbound) -- run the last command longname with empty, queried input (thanks visidata for feature request! 441)
- `resize-cols-input` (`gz_`) -- resize all visible columns to given input width
- thanks sfranky for feature request 414
- `save-col-keys` (unbound) -- save current column and key columns
- fixes 415; thanks sfranky for feature request

new options
- options.disp_float_fmt; default fmtstr to format for float values (default: %0.2f)
- thanks khughitt for PR! 410

Additions and Improvements
- add merge jointype (thanks sfranky for feature request 405)
- like "outer" join, except combines columns by name and each cell returns the first non-null/non-error value
- use color_diff to merge join diffs
- on edit, set values on *all* sheets which have the given row
- adjust `save-cmdlog` input message for clarity
- all sheets have a name (thanks ajkerrigan for helping iron out the kinks with PR 472)
- add args re-parsing to handle plugin options (helps with 443; thanks tkossak for bug report)
- vdmenu should only get pushed outside of replay and batch mode
- move cursor to row/col of undone command (thanks jsvine for request)
- move urlcache into async reload (affects PluginsSheet and motd)
- add 'type' column to `SheetsSheet`

Command changes

- `HOME`/`END` now bound to `go-leftmost`/`go-rightmost`
- thanks [gerard_sanroma](https://twitter.com/gerard_sanroma/status/1222128370567327746) for request
- `z Ctrl+HOME`/`z Ctrl+END` now bound to `go-top`/`go-bottom`
- `Ctrl+N` now bound to `replay-advance`

longname renamings
- `search-next` (was `next-search`)
- `search-prev` (was `prev-search`)
- `jump-prev` (was `prev-sheet`)
- `go-prev-value` (was `prev-value`)
- `go-next-value` (was `next-value`)
- `go-prev-selected` (was `prev-selected`)
- `go-next-selected` (was `next-selected`)
- `go-prev-null` (was `prev-null`)
- `go-next-null` (was `next-null`)
- `go-right-page` (was `page-right`)
- `go-left-page` (was `page-left`)

Plugins
- add usd plugin
- provide USD(s) function to convert strings with currencies to equivalent US$ as float
- uses data from fixer.io
- add vds3 by ajkerrigan
- initial support for browsing S3 paths and read-only access to object
- add "provides" column for plugins (helps with 449; thanks tsibley for feature request)
- standardize author in bazaar.jsonl
- "Firstname Lastname githbhandle"

Bugfixes
- [cmdlog] fix issue with `append_tsv_row`, that occurred with `options.cmdlog_histfile` set
- [replay] fix replaying of rowkeys
- [replay] fix race condition which required the `--replay-wait` workaround
- [plugins] ensure that `options.confirm_overwrite` applies to plugin installation
- [slide] fix slide-leftmost
- had inconsistent behaviour when a sheet had key columns
- [slide] use visibleCol variants, such that slide works as expected with hidden cols
- [options min_memory_mb] disable (set to 0) if "free" command not available
- [core] auto-add raw default column only if options.debug (fixes 424; thanks frosencrantz for bug report)
- [cli] fix --config (thanks osunderdog for bug report! 427)
- [draw] fix status flickering that occurred with certain terminals (thanks vapniks for bug report 412)
- [txt save] save all visibleCols instead of only first one
- [json] avoid adding columns twice when loading JSON dicts (thanks ajkerrigan for bug report (444) and PR (447)
- [fixed] fixed error that occurs when there are no headerlines (thanks frosencrantz for bug report 439)
- [pcap] update loader with modern api
- [csv] catch rows with csv.Errors and yield error msg
- [curses] keypad(1) needs to be set on all newwin (fixes 458)
- [save-sheets] address two bugs with `g Ctrl+S`
- [batch api] override editline() in batch mode (addresses 464; thanks Geoffrey42 for bug report)
- [replay] better handling of failed confirm (addresses 464; thanks Geoffrey42 for bug report)
- [asyncthread] with changed decorators, asyncthread should be the closest decorator to the function
- if it is not, the act of decorating becomes spawned off, instead of calls to the function being decorated
- [canvas] update Canvas delete- commands with current API (fixes 334)

Infrastructure / API
- rename `Sheet` to `TableSheet`
- deprecate `Sheet` but keep it around as a synonym probably forever
- use HTTPS protocol for git submodules (thanks tombh for PR 419)
- this allows installation of VisiData in automated environments such as
Dockerfiles where the git user is not logged into Github
- unit tests have been migrated to pytest
- use counter to keep track of frequency of column names
- for joins, we want un-ambiguous sheets of origin when more than one sheet has a c.name
- all sheets use addColumn api instead of manually appending columns
- set terminal height/width via LINES/COLUMNS via curses.use_env (thanks halloleo for feature request 372)
- update pip command to pull development branch of vsh (thanks khughitt for PR 457)
- change longnames *-replay to replay-*
- rename vd.run() to vd.mainloop()
- `vd.save_foo(p, *sheets)` throughout
- standardize on vd.exceptionCaught
- Sheet.addRows renamed to Sheet.addNewRows
- option overrides can be done with SubSheet.options
- options set with Sheet.options
- extend status() varargs to error/fail/warning
- add BaseSheet.command decorator
- rename tidydata.py to melt.py
- deprecate globalCommand; use BaseSheet.addCommand
- remove vd.addCommand
- deprecate theme(); use option() instead
- deprecate global bindkey/unbindkey
- move commands, bindkeys, `_options` globals to vd object
- DisplayWrapper compares with its value
- this allows sensible colorizers like `lambda s,c,r,v: v==3`
- Sheet.addColorizer now apply to single sheet itself (fixes 433; thanks frosencrantz for bug report)
- add Sheet.removeColorizer (thanks frosencrantz for feature request 434)

Bugfixes
- [setcol-fill] use row identity to identify selected rows (thanks frosencrantz, 884)
- for jsonl, empty rows are identical ({}), and if ones is selected, previously it would result in all of them being filled.
- also, fill with most recent *non-null* value

man
- add a manpage visidata.1
- fix typo

Major changes
- [cmdlog] every sheet now has its own cmdlog
- change `Shift+D` to `cmdlog-sheet`, with commands from source sheets recursively
- `gShift+D` now `cmdlog-all`
- `zShift+D` `cmdlog-sheet-only`
- [dirsheet] VisiData's DirSheet is readonly; move write-mode for DirSheet to `vls` (see plugins)
- [options] `options-global` bound to `gO`and `options-sheet` to `O`
- `open-config` is now unbound (previously `gO`)
- [defermods] has been moved to an opt-in plugin
- [vdmenu] launching `vd` without a source file, opens menu of core sheets
- press `Enter` to open sheet described in current row

Major Features
- [IndexSheet] index into sub-sheets from command line (thanks aborruso for suggestion 214)
- currently works for html and hdf5 loaders
- `+:subsheet:col:row` in cli
- `subsheet` the topsheet upon load, with cursor located in cell at `row` and `col`
- `+:subsheet::` to ignore row/col
- can name toplevel source index if more than one: `+toplevel:subsheet::`

Additions and improvements
- [add-rows] now undo-able
- [aggregators] show-aggregate with quantiles (thanks wesleyac for feature request 395)
- [cli] `-P <longname>` on commandline executes command <longname> on startup
- [cmdlog] jump commands are not logged
- [config] set VisiData height/width via LINES/COLUMNS envvars (thanks halloleo for suggestion 372)
- [csv] add `csv_lineterminator` option (default: '\r\n') (thanks dbandstra for bug report 387)
- retain csv writer default DOS line endings
- [describe] add `options.describe_aggrs` (thanks unhammer for suggestion 273)
- space-separated list of statistics to calculate for numeric columns
- default to existing 'mean stdev'
- add this to .visidatarc for e.g. a harmonic mean to be added automatically to the describe sheet:

from statistics import harmonic_mean
options.describe_aggrs += ' harmonic_mean' note the leading space

- [describe] add hidden "type" col (thanks aborruso for suggestion 356)
- [dirsheet] add `open-dir-current` command to open the DirSheet for the current directory
- [help] add `help-commands-all` on `gz^H` (thanks frosencrantz for suggestion 393)
- [help] add `help-search` command (thanks paulklemm for suggestion 247)
- opens a commands sheet filtered by the input regex.
- [loaders] add --header and --skip universal handling to all sheets that inherit from `SequenceSheet` (currently tsv/csv/fixed/xlsx/xls)
- [menu] if no arguments, open VisiData Main Menu instead of DirSheet
- [plugins] update PluginsSheet to add sha256 and vdpluginsdeps
- [plugins] PluginsSheet now loads plugins in `~/.visidata/plugins/__init__.py` instead of in `~/.visidatarc`
- to use this feature, add `from plugins import *` to `~/.visidatarc`
- [pyobj] for security reasons, `.py` loader moved out of VisiData core and into snippets
- Note that the PyObj loader auto-imports `.py` modules upon loading them
- [ttf] use `Enter` to plot instead of `.`

Plugins
- add hello world minimal plugin
- update viewtsv example (thanks suhrig for --skip improvement suggestions 347)
- add vmailcap with `^V` to view by mimetype (thanks cwarden for suggestion)
- add basic frictionless loader (thanks aborruso for suggestion 237)
- `-f frictionless` with .json either http[s] or local file
- .zip may not work yet
- add fdir filetype; opens a DirSheet for a .txt with a list of paths
- move trackmod and defermod out of VisiData core and into module defermods.py
- defermods defers saving to source until commit-sheet
- deleted rows are colored red and visible until commit
- trackmods tracks changes in source sheet until save-sheet
- deletes are removed upon delete-row(s)
- defermods and trackmods are not on by default, `import visidata.defermods` must be added to visidatarc
- plugin/loader authors: by default, all sheets that inherit from BaseSheet have .defermods=False and .trackmods set to True when defermods is imported
- create package `vsh`; add to it `vls`, `vping`, `vtop`
- `vls` contains write-mode for DirSheet
- add vmutagen for audio tags on DirSheet
- `Alt+m` to add the mutagen columns on the DirSheet
- add geocoding using nettoolkit.com API
- add `addcol-geocode` command to add lat/long columns from location/address column
- new commands in rownum plugin
- `addcol-rownum` adds column with original row ordering
- `addcol-delta` adds column with delta of current column
- vtask is now a discrete plugin

Bugfixes
- [bindkey] move global bindkey after BaseSheet bindkey (thanks sfranky for bug report 379)
- [cmdlog] now will check for `confirm-overwrite`
- [dirsheet] commit/restat/filesize interactions (thanks Mikee-3000 for bug report 340)
- [dirsheet] pass filetype to openSource
- if filetype is not passed, options.filetype would overload file ext
- [expr] catch recursive expression columns (columns that calculate their cells using themselves) (thanks chocolateboy for bug report 350)
- [fixed] various improvements to fixed-width sheet loader (thanks frosencrantz for thorough bughunting 331)
- [http] use options.encoding when no encoding is provided by responses headers (thanks tsibley for the PR 370)
- [join] joining columns in the ColumnSheet resulted in exception (thanks frosencrantz for bug report 336)
- [load] fix replay sync bug (required wait previously)
- however, look out for `vd *` with lots of big datasets, they will now all load simultaneously
- [longname] fix getCommand() error reporting
- [mbtiles] now works again
- [metasheets] created VisiDataMetaSheet which sets system TsvSheet options
- now changes in tsv options for source files will not affect HelpSheet, CmdLog or PluginsSheet
- thanks frosencrantz for bug report 323
- [options] no error on unset if option not already set
- [path] filesize of url is 0
- [path] fix piping bug (vd failed to read stdin) (thanks ajkerrigan for bug report 354)
- [plugins] ensure consistent Python exe for plugin installs (thanks ajkerrigan for fix)
- [plugins] make plugin removal more predictable (thanks ajkerrigan for fix)
- [prev-sheet] would stack trace if more than one sheet loaded and no other sheet visited (thanks frosencrantz for bug report 342)
- [regex] will not silently fail if some example rows are not matches
- [save] convert savers to use itervalues
- itervalues(format=False) now yields OrderedDict of col -> value
- value is typed value if format=False, display string if True
- options.safety_first will convert newlines and tabs to options.tsv_safe_newline and options.tsv_safe_tab (thanks mesibov for bug report 76)
- [sheets] colorizer exceptions are now caught
- [sheets] keycols now keep order they are keyed
- [sysedit] trim all trailing newlines from external edits (thanks sfranky for bug report 378)
- [tsv] column name "length" prevented loading (thanks suhrig for bug report 344)
- [undo] redo with cmd on first row did not move cursor (thanks Mikee-3000 for bug report 339)
- now row/col context are set as strings, even when they are numeric indices

Infrastructure / API
- [add-row] create a default newRow for Sheet (thanks for-coursera for bug report 363)
- [calc] add INPROGRESS sentinel
- sentinel that looks like an exception for calcs that have not completed yet
- [extensible] add new cached_property, which caches until clear_all_caches, which clears all cached_property
- [Fanout] add Fanout
- fan out attribute changes to every element in a list; tracks undo for list
- [lazy_property] newSheet and cmdlog are now lazy_property
- this enables the overwriting and extending of them by plugins
- [loaders] add sheet.iterload()
- will use sheet.source to populate and then yield each row
- [loaders] vd.filetype(ext, ExtSheet) to register a constructor
- [loaders] add Sheet.iterrows() to yield row objects
- grouping use iterrows() for streaming input
- __iter__() yields LazyComputeRows

for row in vd.openSource('foo.csv'):
print(row.date, row.name)

- [IndexSheet] refactor SheetsSheet parent to IndexSheet
- HtmlTablesSheet now inherits from IndexSheet
- excel index changed to standard IndexSheet model
- VisiDataSheet changed into IndexSheet
- move join-sheets to IndexSheet
- [options] add unset() to unset options (thanks khughitt for suggestion 343)
- [path] consolidate PathFd, UrlPath, and HttpPath into Path
- [SequenceSheet] refactor tsv, csv, xls(x), fixed_width to inherit from SequenceSheet
- [sheets] vd.sheetsSheet is sheetstack, vd.allSheetsSheet is sheetpile
- [sheets] rename LazyMap to LazyChainMap and LazyMapRow to LazyComputeRow
- [shortcut] BaseSheet.shortcut now property
- [status] make right status more configurable (thanks layertwo 375 and khugitt 343 for filing issues)
- BaseSheet.progressPct now returns string instead of int
- BaseSheet.rightStatus() now returns string only (not color)
- by default uses `options.disp_rstatus_fmt`, configured like `disp_status_fmt`
- progress indicator (% and gerund) moved out of rightStatus and into drawRightStatus
- [undo] use undofuncs to associate command with its undo
- [undo/redo] moved to undo.py
- [vd] add sheet properties for errors and statuses
- [vd] vd.quit() now takes `*sheets`
- [vd] rename main() to main_vd()

- [macros] allow macro interfaces to be longnames (thanks frosencrantz 787)
- [save] better default save filename for url sheets (thanks geekscrapy 824)

Bugfixes
- [cmdlog] record column, sheet, and row info for open-cell
- [cmdlog] catch case of 'override' sheet for set-option
- [expr-col] `curcol` now works for multiple invocations (thanks geekscrapy 659)
- [loaders postgres] account for postgres_schema when rendering Postgres tables (thanks jdormit for PR 852)
- [loaders url] fail unknown URL scheme (thanks geekscrapy for PR 84)
- [pyobj] fix Pyobj Sheets for lists (thanks brookskindle 843)
- [pipe] handle broken pipes gracefully (thanks robdmc 851)
- [scroll] fix issue with jagged scrolling down (thanks uoee 832)
- [sort] fix bug where total progress in sorting is (100 * of columns to sort) (thanks cwarden)

api
- format_field formats int(0) and float(0.0) as "0" (thanks geekscrapy for PR 821)
- add TypedWrapper.__len__ (thanks geekscrapy)

Major changes

- Minimum Python requirement bumped to 3.6
- Several interface changes (see below)

Major features

- add Alt/Esc as prefix; Alt+ to go to that sheet
- Alt+ layer not otherwise used; bind with `^[x` for Alt+X
- undo/redo
- [new command] `options.undo` (default: True) to enable infinite linear undo/redo
- provisionally bound to `Shift+U` and `Shift+R`
- will undo most recent modification on current sheet
- `undoEditCells` assumes commands modified only selectedRows
- multi-line rows
- toggle by pressing `v` on any sheets with truncated values
- range binning for numeric columns
- `options.numeric_binning` (default: False) is the feature flag
- [feature freqtbl] numeric binning for frequency/pivot table
- `options.histogram_bins` to set number of bins (0 to choose a reasonable default)
- (thanks paulklemm for the issue 244)
- stdout pipe/redirect
- `ls|vd|lpr` to interactively select a list of filenames to send to the printer
- `q`/`gq` to output nothing
- `Ctrl+Q` to output current sheet (like at end of -b)
- `vd -o-` to send directly to the terminal (not necessary if already redirected)
- plugin framework
- plugins are optional Python modules that extend or modify base VisiData's functionality
- this release establishes a structure for creating plugins, and provides an interface within VisiData for installing them
- `open-plugins` opens the **PluginsSheet**
- to download and install a plugin, move the cursor to its row and press `a` (add)
- to turn off a plugin, move the cursor to its row and press `d` (delete).
- for more information see (https://visidata.org/docs/plugins)
- deferred changes
- modifications are now highlighted with yellow, until committed to with `^S` (`save-sheet`)

interface changes

- `setcol-*`, `dive-selected`, `dup-selected-*`, `columns-selected`, `describe-selected` use only selectedRows (do not use all rows if none selected) 265 (thanks cwarden)
- `edit-cells` renamed to `setcol-input`
- `fill-nulls` renamed to `setcol-fill`
- `paste-cells` renamed to `setcol-clipboard`
- `dup-cell`/`dup-row` on SheetFreqTable and DescribeSheet renamed to `dive-cell`/`dive-row`
- `next-page`/`prev-page` renamed to `go-pagedown`/`go-pageup`
- `save-col` always saves all rows in current column (instead of selectedRows or rows)
- `copy-*` use only selectedRows, warning if none selected (cmdlog safe)
- `syscopy-*` use only selectedRows, fail if none selected (not cmdlog safe)
- all `plot-selected` are now `plot-numerics`; `plot-numerics` uses all rows
- Shift+S pushes `sheets-stack`; gS pushes `sheets-all`. removed graveyard sheet.
- `random-rows` is no longer bound to any key by default (was Shift+R).
- `freq-summary` was `freq-rows`; adds summary for selected rows
- cmdlog is now based on longname instead of keystrokes
- cmdlog does not log resize commands
- exit with error code on error during replay (suggested by cwarden 240)
- split `Ctrl+V` (check-version) into `Ctrl+V` (show-version) and `z Ctrl+V` (require-version)
- `show-expr` now unbound from `z=`
- add `options.row_delimiter` (default to `\n`)


plugins

- vfake: anonymizes columns
- livesearch: filter rows as you search
- rownum: add column of original row ordering
- sparkline: add a sparkline column to visualise trends of numeric cells in a row (thanks layertwo 297)

Bugfixes

- [addcol-new] addcol-new now works in batch mode (thanks cwarden for the bug report 251)
- [canvas] clipstr xname to prevent overlap with 1st element in xaxis
- [color] column separator color applies to regular rows (thanks mightymiff for bug report 321)
- [DirSheet] delete-selected now deletes all of the selected files upon save-sheet (thanks cwarden for the bug report 261)
- [display] fix resizing issue with wide chars (thanks polm for the bug report 279 and for the fix 284 )
- [freqtbl] unselect-rows now updates source rows (thanks cwarden for bug report 318)
- [go-col-regex] nextColRegex sheet is implicit parameter
- [help] use tab as sep for system sheets (thanks frosencrantz for bug report 323)
- [plot] graphing currency values now works
- [pyobj] SheetDict nested editing (thanks egwynn for the bug report 245)
- [txt] TextSheets now save as .txt
- [yaml] handle sources that do not load as lists (thanks frosencrantz for bug report 327)
- [vdtui] make Sheet sortable (related to an issue found by jsvine 241)


Additions and improvements

- [addcol-new] does not ask for column name
- [aggr] add `list` aggregator (thanks chocolateboy 263)
- [canvas] add legend width to fit max key (thanks nicwaller for request)
- [chooseMany] error() on invalid choice 169
- [command join] add join-sheets-top2 (`&`) / join-sheets-all (`g&`) to Sheet to join top 2/all sheets in sheets-stack
- [command sort] `sort-*-add` bound to z[] and gz[] to add additional sort columns
- [command syspaste-cells] add `syspaste-cells` to paste into vd from system clipboard (thanks kovasap for PR 258)
- [describe] add `sum` (thanks pigmonkey for suggestion 315)
- [DirSheet] include folders and hidden files
- [exec-longname] enable history
- [freeze-sheet] only freeze visibleCols
- [html] add links column where hrefs available (suggested by am-zed 278)
- [license] remove MIT license from vdtui; all code now licensed under GPL3
- [loader fixed] provide a way to limit the max number of columns created (thanks frosencrantz for suggestion 313)
- added `options.fixed_maxcols` (default: no limit)
- [loader fixed] loaders override putValue, not setValue (thanks aborruso for bug report 298)
- [loader jira] add support for jira filetype, a markdown derivative compatible with Atlassian JIRA (thanks layertwo 301)
- [loader Pyobj] `py` filetype to import and explore a python module: `vd -f py curses`
- [loader pyxlsb] add .xlsb loader (suggested by woutervdijke 246)
- [loader ndjson ldjson] add as aliases for jsonl
- [loader npy] add .npy loader, including type detection
- [loader npz] add support for .npz index
- [loader usv] add .usv loader
- [macros] is now deprecated
- [motd] domotd is asyncsingle and thus not sync-able
- [mouse] bind Ctrl+scrollwheel to scroll-left/right; change to move cursor by `options.scroll_incr` (like scroll-up/down)
- [mouse] slide columns/rows with left-click and drag
- [openSource] create new blank sheet if file does not exist
- [option json] add `options.json_sort_keys` (default True) to sort keys when saving to JSON (thanks chocolateboy for PR 262)
- [option regex+] `options.default_sample_size` (default 100) to set number of example rows for regex split/capture (now async). use None for all rows. (thanks aborruso 219)
- [option vd] `--config` option to specify visidatarc file (suggested by jsvine 236)
- [option vdtui] remove `curses_timeout` option (fix to 100ms)
- [pandas] support multi-line column names (suggested by jtrakk 223)
- [pandas] implement sort() for pandas DataFrame (suggested by migueldvb 257)
- [pandas] use value_counts() for PandasSheetFreqTable (thanks azjps for PR 267)
- [pandas] selection support for PandasSheet (thanks azjps for PR 267)
- [pandas] reset index (thanks danlat 277)
- [pandas] if the df contains an index column, hide it
- [pcap] adds saver for .pcap to json (thanks layertwo for PR 272)
- [perf] expr columns are now set to cache automatically
- [perf] drawing performance improvements
- [perf] minor improvements to cliptext
- [perf] several minor optimisations to color
- [precious] describe-sheet is now precious; error-sheet and threads-sheet are not
- [replay] show comments as status (suggested by cwarden)
- [save] make all `save_` callers async
- [sqlite] add save (CREATE/INSERT only; for wholesale saving, not updates)
- [sqlite] `Ctrl+S` to commit add/edit/deletes
- [sqlite] add support for .sqlite3 extension
- [tar] add support for opening tar files (thanks layertwo 302)
- [vdmenu] `Shift+V` opens menu of core sheets
- press `Enter` to open sheet described in current row
- [win] several changes made for increased windows-compatibility (thanks scholer!)
- [yaml] bump min required version (thanks frosencrantz for suggestion 326)


API
- VisiData, BaseSheet, Column inherit from Extensible base class
- internal modules and plugins can be self-contained
- `X.property X.lazy_property`, `X.init()`, `X.api`
- remove Sheet.vd; 'vd' attrs now available in execstr
- remove hooks
- add deprecated(ver) decorator; put deprecations in deprecated.py
- `vd.sync(*threads)` waits on specific threads (returned by calls to `asyncthread` functions)
- add Sheet.num for left status prompt
- pivot and frequency table have been consolidated for numeric binning
- add Sheet.nFooterRows property
- Sheet.column() takes colname instead of regex; add Sheet.colsByName cached property
- use addRow to rows.append in reload()
- Selection API is overloadable for subclasses of Sheet whose rows don't have a stable id() (like pandas)
- use locale.format_string and .currency
- uses user default locale settings at startup
- changes fmtstr back to %fmt (from {:fmt})
- vdtui broken apart into separate modules: editline, textsheet, cliptext, color, column, sheet
- much code reorganization throughout
- convert all `vd()` to `vd`
- remove ArrayColumns, NamedArrayColumns
- urlcache now takes days=n
- Sheet.rowid
- add windowWidth and windowHeight
- Sheets use their own .scr, in preparation for split-screen
- add VisiData.finalInit() stage
- call vd.finalInit() at end of module imports to initialise VisiData.init() members
- so that e.g. cmdlog is not created until all internal sheet-specific options has been set
- remove replayableOption() (now replay an argument within option())
- CursesAttr is now ColorAttr; ColorAttr now a named tuple
- variables that contain a ColorAttr have been renamed from attr to cattr for readability
- improvements to scrolling API
- rename most cases of Sheet*/Column* to *Sheet/*Column
- use pathlib.Path in visidata.Path
- remove BaseSheet.loaded; add BaseSheet.rows = UNLOADED
- vd.push no longer returns sheet
- add asyncsingle for asyncthread singleton

Deps
- add submodule fork of pyxlsb for VisiData integration
- add amoffat/sh as submodule for vgit and vsh
- [postgres] swap for binary version of dep

Bugfixes
- Fix printing of motd to status