v0.12.0

Stdlib changes:

• Fix std.parseHex that rejected certain correct inputs
• Added std.find and std.findSubstr
• Added std.parseJson

Performance:

• C++ implementation desugarer now uses less stack space
• C++ implementation has native (faster) implementations of std.join, std.splitLimit, std.substr, std.range std.strReplace, std.asciiLower, std.asciiUpper

Python

• jpathdir in Python bindings

Go

• New -c option will create directories for output files if necessary