Hy

==============================

Bug Fixes
------------------------------
* Changed setup.py to require astor 0.5, since 0.6 isn't
backwards-compatible.

==============================

Language Changes
------------------------------
* Pythons 2.6, 3.0, 3.1, and 3.2 are no longer supported
* `let` has been removed. Python's scoping rules do not make a proper
implementation of it possible. Use `setv` instead.
* `lambda` has been removed, but `fn` now does exactly what `lambda` did
* `defreader` has been renamed to `defsharp`; what were previously called
"reader macros", which were never true reader macros, are now called
"sharp macros"
* `try` now enforces the usual Python order for its elements (`else` must
follow all `except`\s, and `finally` must come last). This is only a
syntactic change; the elements were already run in Python order even when
defined out of order.
* `try` now requires an `except` or `finally` clause, as in Python
* Importing or executing a Hy file automatically byte-compiles it, or loads
a byte-compiled version if it exists and is up to date. This brings big
speed boosts, even for one-liners, because Hy no longer needs to recompile
its standard library for every startup.
* Added bytestring literals, which create `bytes` objects under Python 3
and `str` objects under Python 2
* Commas and underscores are allowed in numeric literals
* Many more operators (e.g., `**`, `//`, `not`, `in`) can be used
as first-class functions
* The semantics of binary operators when applied to fewer or more
than two arguments have been made more logical
* `(** a b c d)` is now equivalent to `(** a (** b (** c d)))`,
not `(** (** (** a b) c) d)`
* `setv` always returns `None`
* When a `try` form executes an `else` clause, the return value for the
`try` form is taken from `else` instead of the `try` body. For example,
`(try 1 (except [ValueError] 2) (else 3))` returns `3`.
* `xor`: If exactly one argument is true, return it
* `hy.core.reserved` is now `hy.extra.reserved`
* `cond` now supports single argument branches

Bug Fixes
------------------------------
* All shadowed operators have the same arities as real operators
* Shadowed comparison operators now use `and` instead of `&`
for chained comparisons
* `partition` no longer prematurely exhausts input iterators
* `read` and `read-str` no longer raise an error when the input
parses to a false value (e.g., the empty string)
* A `yield` inside of a `with` statement will properly suppress implicit
returns
* `setv` no longer unnecessarily tries to get attributes
* `loop` no longer replaces string literals equal to "recur"
* The REPL now prints the correct value of `do` and `try` forms
* Fixed a crash when tokenizing a single quote followed by whitespace

Misc. Improvements
------------------------------
* New contrib module `hy-repr`
* Added a command-line option `--repl-output-fn`

==============================

Bug Fixes
------------------------------
* Allow installation without Git

==============================

This release brings some quite significant changes on the language and as a
result very large portions of previously written Hy programs will require
changes. At the same time, documentation and error messages were improved,
hopefully making the language easier to use.

Language Changes
------------------------------
* New syntax for let, with and defclass
* defmacro will raise an error on &kwonly, &kwargs and &key arguments
* Keyword argument labels to functions are required to be strings
* slice replaced with cut to stop overloading the python built-in
* removed redundant throw, catch, progn, defun, lisp-if, lisp-if-not,
filterfalse, true, false and nil
* global now takes multiple arguments
* Nonlocal keyword (Python 3 only)
* Set literals ({1 2 3})
* Keyword-only arguments (Python 3 only)
* Setv can assign multiple variables at once
* Empty form allowed for setv, del and cond
* One-argument division, rationals and comparison operators (=, !=, <, >, <=, >=)
* partition form for chunking collection to n-sized tuples
* defn-alias and demacro-alias moved into hy.contrib.alias
* None is returned instead of the last form in --init--
* for and cond can take a multi-expression body
* Hex and octal support for integer literals
* Apply now mangles strings and keywords according to Hy mangling rules
* Variadic if
* defreader can use strings as macro names
* as-> macro added
* require syntax changed and now supports same features as import
* defmulti changed to work with dispatching function
* old defmulti renamed to defn
* Lazy sequences added to contrib
* defmacro! added for once-only evaluation for parameters
* comp, constantly, complement and juxt added
* keyword arguments allowed in method calls before the object

Bug Fixes
------------------------------
* Better error when for doesn't have body
* Better error detection with list comprehensions in Python 2.7
* Setting value to callable will raise an error
* defclass can have properties / methods with built-in names
* Better error messages on invalid macro arguments
* Better error messages with hy2py and hyc
* Cmdline error to string conversion.
* In python 3.3+, generator functions always return a value
* &rest can be used after &optional

Misc. Improvements
------------------------------
* Version information includes SHA1 of current commit
* Improved Python 3.5 support
* Allow specification of global table and module name for (eval ...)
* General documentation improvements
* Contrib.walk: Coerce non-list iterables into list form
* Flow macros (case and switch)
* ap-pipe and ap-compose macros
* reader macro for with-decorator
* Type check `eval` parameters
* `and` and `or` short-circuit
* `and` and `or` accept zero or more arguments
* read-str for tokenizing a line
* botsbuildbots moved to contrib
* Trailing bangs on symbols are mangled
* xi forms (anonymous function literals)
* if form optimizations in some cases
* xor operator
* Overhauled macros to allow macros to ref the Compiler
* ap-if requires then branch
* Parameters for numeric operations (inc, dec, odd?, even?, etc.) aren't type checked
* import_file_to_globals added for use in emacs inferior lisp mode
* hy.core.reserved added for querying reserved words
* hy2py can use standard input instead of a file
* alias, curry, flow and meth removed from contrib
* contrib.anaphoric moved to hy.extra

==============================

Language Changes
------------------------------
* new keyword-argument call syntax
* Function argument destructuring has been added.
* Macro expansion inside of class definitions is now supported.
* yield-from support for Python 2
* with-decorator can now be applied to classes.
* assert now accepts an optional assertion message.
* Comparison operators can now be used with map, filter, and reduce.
* new last function
* new drop-last function
* new lisp-if-not/lif-not macro
* new symbol? function
* butlast can now handle lazy sequences.
* Python 3.2 support has been dropped.
* Support for the matrix-multiplication operator (forthcoming in
Python 3.5) has been added.

Bug Fixes
------------------------------
* Nested decorators now work correctly.
* Importing hy modules under Python >=3.3 has been fixed.
* Some bugs involving macro unquoting have been fixed.
* Misleading tracebacks when Hy programs raise IOError have been
corrected.

Misc. Improvements
------------------------------
* attribute completion in REPL
* new -m command-line flag for running a module
* new -i command-line flag for running a file
* improved error messaging for attempted function definitions
without argument lists
* Macro expansion error messages are no longer truncated.
* Error messaging when trying to bind to a non-list non-symbol in a
let form has been improved.

Thanks to theanalyst (Abhi) for getting the release notes
together. You're the best!
- Hy Society

Breaking Changes
------------------------------

We're calling this release 0.10 because we broke
API. Sorry about that. We've removed kwapply in
favor of using `apply`. Please be sure to upgrade
all code to work with `apply`.

(apply function-call args kwargs) ; is the signature

Thanks
------------------------------

Major shoutout to Clinton Dreisbach for implementing loop/recur.
As always, massive hugs to olasd for the constant reviews and for
implementing HyCons cells. Thanks to kenanb for redesigning the
new Hy logo.

Many thanks to algernon for working on adderall, which helped
push Hy further this cycle. Adderall is an implementation of miniKanren
in Hy. If you're interested in using Adderall, check out hydiomatic,
which prettifies Hy source using Adderall rules.

This release saw an increase of about 11 contributors for a point
release, you guys rock!

-Hy Society

Language Changes
------------------------------

* `for` revamped again (Last time, we hope!), this time using a saner
itertools.product when nesting
* `lisp-if`/`lif` added for the lisp-like everything is true if, giving
seasoned lispers a better if check (0 is a value, etc)
* Reader Macros are macros now!
* yield-from is now a proper yield from on Python 3. It also now breaks on
Python 2.x.
* Added if-not macro
* We finally have a lisp like cons cells
* Generator expressions, set & dict comprehensions are now supported
* (.) is a mini DSL for attribute access
* `macroexpand` & `macroexpand-1` added to core
* `disassemble` added to core, which dumps the AST or equivalent python code
* `coll?` added to core to check for a collection
* `identity` function added to core

Misc. Fixes
------------------------------
* Lots of doc fixes. Reorganization as well as better docs on Hy internals
* Universal Wheel Support
* Pygments > 1.6 supports Hy now. All codeblocks in docs have been changed
from clojure to hy
* Hy REPL supports invoking with --spy & -i options [reword]
* `first` and `rest` are functions and not macros anymore
* "clean" target added to Makefile
* hy2py supports a bunch of commandline options to show AST, source etc.
* Sub-object mangling: every identifier is split along the dots & mangled
separately

Bug Fixes
------------------------------
* Empty MacroExpansions work as expected
* Python 3.4 port. Sorry this wasn't in a 3.4 release time, we forgot to do
a release. Whoops.
* eg/lxml/parse-tumblr.hy works with Python 3
* hy2py works on Windows
* Fixed unicode encoding issue in REPL during unicode exceptions
* Fixed handling of comments at end of input (382)

Contrib changes
------------------------------
* Curry module added to contrib
* Loop/recur module added which provides TCO at tail position
* defmulti has been added - check out more in the docs -- thanks to Foxboron for this one!
* Walk module for walking the Hy AST, features a `macroexpand-all` as well