Hy

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Syntax Fixes
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* Statements in the `fn` path early will not return anymore. (PT)
* Added "not" as the inline "not" operator. It's advised to still
use "not-in" or "is-not" rather than nesting. (JD)
* `let` macro added (PT)
* Added "~" as the "invert" operator. (JD)
* `catch` now accepts a new format: (JD)
(catch [] BODY)
(catch [Exception] BODY)
(catch [e Exception] BODY)
(catch [e [Exception1 Exception2]] BODY)
* With's syntax was fixed to match the rest of the code. It's now: (PT)
(with [name context-managed-fn] BODY)
(with [context-managed-fn] BODY)

Language Changes
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* Added `and` and `or` (GN)
* Added the tail threading macro (->>) (PT)
* UTF encoded symbols are allowed, but mangled. All Hy source is now
presumed to be UTF-8. (JD + PT)
* Better builtin signature checking (JD)
* If hoisting (for things like printing the return of an if statement)
have been added. '(print (if true true true))' (PT)

Documentation
------------------------------

* Initial documentation added to the source tree. (PT)

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Syntax Fixes
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* Nested (do) expressions no longer break Hy (PT)
* `progn` is now a valid alias for `do` (PT)
* `defun` is now a valid alias for `defn` (PT)
* Added two new escapes for \ and " (PT)

Language Changes
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* Show a traceback when a compile-error bubbles up in the Hy REPL (PT)
* `setf` / `setv` added, the behavior of `def` may change in the future.
* `print` no longer breaks in Python 3.x (PT)
* Added `list-comp` list comprehensions. (PT)
* Function hoisting (for things like inline invocation of functions,
e.g. '((fn [] (print "hi!")))' has been added. (PT)
* `while` form added. (ND)
(while [CONDITIONAL] BODY)

Documentation
------------------------------

* Initial docs added. (WKG + CW)

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General Enhancements
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* hy.__main__ added, `python -m hy` will now allow a hy shim into existing
Python scripts. (PT)

Language Changes
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* `import-as` added to allow for importing modules. (Amrut Joshi)
* `slice` added to slice up arrays. (PT)
* `with-as` added to allow for context managed bits. (PT)
* `%` added to do Modulo. (PT)
* Tuples added with the '(, foo bar)' syntax. (PT)
* `car` / `first` added. (PT)
* `cdr` / `rest` added. (PT)
* hy --> .pyc compiler added. (PT)
* Completer added for the REPL Readline autocompletion. (PT)
* Merge the `meth` macros into hy.contrib. (PT)
* Changed __repr__ to match Hy source conventions. (PT)
* 2.6 support restored. (PT)

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General Enhancements
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* Hy REPL added. (PT)
* Doc templates added. (PT)

Language Changes
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* Add `pass` (PT)
* Add `yield` (PT)
* Moved `for` to a macro, and move `foreach` to old `for`. (PT)
* Add the threading macro (`->`). (PT)
* Add "earmufs" in. (tenach)
* Add comments in (PT)

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Language Changes
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* Add `throw` (PT)
* Add `try` (PT)
* add `catch` (PT)

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Notes
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* Complete rewrite of old-hy. (PT)