See Coconut's documentation for more information on all of the features listed below.

New features:

• #220: new function composition pipe operators (thanks, @cgarciae!)
• #243: new none-aware operators
• #200: new enhanced type annotation syntax (thanks, @fredcallaway!)
• #257: data types now support default arguments
• #276: data types now support type annotations (thanks, @jonathanplatzer!)
• #275: pipes and infix calls now support lambdas in them
• #256: new string destructuring pattern-matching
• #267: improved dictionary pattern-matching (thanks, @cgarciae!)
• #284: new starmap built-in
• #271: new reiterable built-in (thanks, @pchampin!)
• #266: new scan built-in
• #297, #309: new groupsof built-in (thanks, @kbaskett248!)
• #303: datamaker deprecated in favor of new makedata built-in
• #283: prepattern deprecated
• #282: fmap of a mapping now iterates over its .items()
• #286: new --argv command-line option
• #300: Coconut now installable via conda
• #53: now supports cPyparsing for faster parsing

Fixes:

• #280: fixed infix notation associativity
• #268: tail call optimization now significantly faster
• #147: removed interpreter lag on first line of code
• #279: prettier interpreter errors
• #298: pattern-matching function docstrings now actually get bound to __doc__
• #285: type: ignore comments now work properly
• #255: fixed nested attribute getter implicit partial (thanks, @Socialery!)
• #269: fixed segfault in non-iterator functions (thanks, @pchampin!)
• #264: fixed recursive_iterator error (thanks, @pchampin!)
• #308: fixed importing StringIO and BytesIO on Python 2 (thanks, @cgarciae!)
• #295: fixed Cygwin error (thanks, @halloleo!)
• #288: fixed Pythonista installation error (thanks, @iamrecursion!)
• #277: fixed Jupyter kernel installation error (thanks, @petrilli!)
• #311: now gracefully handles old pyparsing versions
• #294: piping into partials no longer creates intermediate partial objects