Release v0.1.3

What's Changed

• Changed license to GPL by @alexroan in #528
• AST Improvements + Adding prb math to CI by @TilakMaddy in #513
• Bump version to 0.1.3 by @alexroan in #532
• More concise issue templates by @alexroan in #533
• Release CI sets latest release by @alexroan in #536
• Fix: Empty config values treated as None by @alexroan in #538
• Feature : Cyfrinup dynamic script by @TilakMaddy in #540
• AST Checklist - Part 1 by @TilakMaddy in #537
• AST Checklist - Part 1.5 (Identifier referenced declaration made optional) by @TilakMaddy in #549
• AST Checklist - Part 2 by @TilakMaddy in #539
• AST Checklist - Part 3 by @TilakMaddy in #542
• Update installer path by @alexroan in #554

Full Changelog: v0.1.2...v0.1.3