This is a preview of some of the new features in the upcoming 0.5.0 release.

New Features

Greedy case statements: explicit ambiguity resolution can be turned on as an option in case statements now (52e5418)
Finish codes: explicit finish statements can now return custom status codes, instead of just always giving _DONE (1ffe4d4)
Yield: parsers can now interrupt execution with a return code and be restarted; for example to build a lexer (1ffe4d4, 41b2c23)

Bugs Fixed

Loops that have (possibly conditional) breaks before any matching statements no longer think they're infinite (a687b3b)

Tests now use finish codes to better check correctness (9f1c20e)
Various examples/docs have been updated to use finish codes instead of result enumerations (976fc60, a777a5e)
New lexer example demonstrating yield functionality (a9a96a8)
Various documentation improvements:
- Better syntax highlighting (2527e74, 4d52e5c, ee68d8f, dd6223f, d779af1)
- New tutorial describing the lexer example (b693a8a)
- Documentation for the new greedy case and yield/finish codes (b9e96a8, 4e47875)
Updated to lark 1.0 (f3dd61e)
Appimages now build against Ubuntu 20.04 as their base (9dc256c)
- Note snaps may be removed in a future release due to issues in reliably building them in CI