Cmd2

- Bug Fixes
- Fixed `poutput()` so it can print an integer zero and other **falsy** things
- Fixed a bug which was causing autodoc to fail for building docs on Readthedocs
- Fixed bug due to `pyperclip` dependency radically changing its project structure in latest version
- Enhancements
- Improved documentation for user-settable environment parameters
- Improved documentation for overriding the default supported comment styles
- Added `runcmds_plus_hooks()` method to run multiple commands w/o a cmdloop

- Bug Fixes
- Added workaround for bug which occurs in Python 2.7 on Linux when `pygtk` is installed
- `pfeedback()` now honors feedback_to_output setting and won't redirect when it is `False`
- For `edit` command, both **editor** and **filename** can now have spaces in the name/path
- Fixed a bug which occurred when stdin was a pipe instead of a tty due to input redirection
- Enhancements
- `feedback_to_output` now defaults to `False` so info like command timing won't redirect
- Transcript regular expressions now have predictable, tested, and documented behavior
- This makes a breaking change to the format and expectations of transcript testing
- The prior behavior removed whitespace before making the comparison, now whitespace must match exactly
- Prior version did not allow regexes with whitespace, new version allows any regex
- Improved display for `load` command and input redirection when **echo** is `True`

- Bug Fixes
- Case-sensitive command parsing was completely broken and has been fixed
- `<Ctrl>+d` now properly quits when case-sensitive command parsing is enabled
- Fixed some pyperclip clipboard interaction bugs on Linux
- Fixed some timing bugs when running unit tests in parallel by using monkeypatch
- Enhancements
- Enhanced tab completion of cmd2 command names to support case-insensitive completion
- Added an example showing how to remove unused commands
- Improved how transcript testing handles prompts with ANSI escape codes by stripping them
- Greatly improved implementation for how command output gets piped to a shell command

- Bug Fixes
- `case_insensitive` is no longer a runtime-settable parameter, but it was still listed as such
- Fixed a recursive loop bug when abbreviated commands are enabled and it could get stuck in the editor forever
- Added additional command abbreviations to the "exclude from history" list
- Fixed argparse_example.py and pirate.py examples and transcript_regex.txt transcript
- Fixed a bug in a unit test which occurred under unusual circumstances
- Enhancements
- Organized all attributes used to configure the ParserManager into a single location
- Set the default value of `abbrev` to `False` (which controls whether or not abbreviated commands are allowed)
- With good tab completion of command names, using abbreviated commands isn't particularly useful
- And it can create complications if you are't careful
- Improved implementation of `load` to use command queue instead of nested inner loop

- Bug fixes
- Fixed a couple bugs in interacting with pastebuffer/clipboard on macOS and Linux
- Fixed a couple bugs in edit and save commands if called when history is empty
- Ability to pipe `cmd2` command output to a shell command is now more reliable, particularly on Windows
- Fixed a bug in `pyscript` command on Windows related to `\` being interpreted as an escape
- Enhancements
- Ensure that path and shell command tab completion results are alphabetically sorted
- Removed feature for load command to load scripts from URLS
- It didn't work, there were no unit tests, and it felt out of place
- Removed presence of a default file name and default file extension
- These also strongly felt out of place
- `load` and `_relative_load` now require a file path
- `edit` and `save` now use a temporary file if a file path isn't provided
- `load` command has better error checking and reporting
- Clipboard copy and paste functionality is now handled by the **pyperclip** module
- `shell` command now supports redirection and piping of output
- Added a lot of unit tests
- Other changes
- Removed pause command
- Added a dependency on the **pyperclip** module

- Bug fixes
- Fixed a bug in displaying a span of history items when only an end index is supplied
- Fixed a bug which caused transcript test failures to display twice
- Enhancements
- Added the ability to exclude commands from the help menu (**eof** included by default)
- Redundant **list** command removed and features merged into **history** command
- Added **pyscript** command which supports tab completion and running Python scripts with arguments
- Improved tab completion of file system paths, command names, and shell commands
- Thanks to Kevin Van Brunt for all of the help with debugging and testing this
- Changed default value of USE_ARG_LIST to True - this affects the beavhior of all **options** commands
- **WARNING**: This breaks backwards compatibility, to restore backwards compatibility, add this to the \***\*init**()\*\* method in your custom class derived from cmd2.Cmd:
- cmd2.set_use_arg_list(False)
- This change improves argument parsing for all new applications
- Refactored code to encapsulate most of the pyparsing logic into a ParserManager class