Release v3.1.0

[evhub]

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

Language features:

• Fix scoping for statement lambdas #814: Changes to statement lambda scoping rules, including capturing names introduced in the surrounding expression.
• Add syntax for late-bound function defaults #618: Changes to handling of pattern-matching function defaults including support for e.g. match def f(x, y=x) = (x, y).
• Add implicit partials for array concatenation syntax #809: New array concatenation implicit partials (e.g. [. ; a]).
• Add walrus operator function implicit partial #823: New (x := .) implicit partial syntax (only available in pipes).
• Add built-in to combine unary functions into a function that applies each function to the corresponding argument #807: New lift_apart built-in combinator.
• Add ternary operator function #813: New (if) operator function.
• fmap support for bytes #826 (thanks @JayXon!): Better universalization and fmap support for bytes and bytearray.
• Add support for xarray similar to existing pandas/numpy support #816: Support for xarray to match existing numpy/pandas support.
• Add to argument to all_equal #817: New to argument to all_equal.
• Implicit application doesn't work if the function's first token is a string literal #821 (thanks @GolfingSuccess!): Expanded implicit function application syntax to support string literal methods.

Compiler features:

• Enable coconut-run/--run for directories #799: coconut-run and coconut --run now work on packages rather than just files.
• Improve exception formatting #812: Better formatting of Coconut exceptions.

Bugfixes:

• Fix ? usage in kernel #810: Fixed an issue compiling certain syntax constructs in the Coconut Jupyter kernel.
• Line break characters aren't compatible with pure Python #818, Some Unicode characters are replaced with a newline #825 (thanks @kg583, @dokutan!): Fixed parsing of different Unicode line break characters.
• unicode alternative of multiple-argument pipe backward ↤* does not work #822 (thanks @JayXon!): Fixed parsing of Unicode backward pipe operators.
• if + string w/o whitespace creates strange characters #819, Walruses aren't allowed in places where they should be #820 (thanks @kg583!): Fixed some incompatibilities between Python and Coconut syntax.