0.6.0.0

Community

• New Discord server!

Breaking changes

• Types are now required to start with an uppercase letter (#1583)
  • Use swarm format --v0.5 to convert old code.

Bugfixes

• Variables in a local monadic binder escape to outer scopes
  (#681; fixed by #1928)

New Features

Language

• volume command measuring the enclosed area around a given location
  (#1747)
• sow command for planting growing entities that spread (#1817)
• Type synonyms (#1865)
• Recursive types (#1894)
• Entity tags and related commands (#1635)
• meetAll command now returns a list (#1999)

Entities + recipes

• New lens entity and recipe for detonator (#1876)
• infinite improbability drive device enabling teleport command
  (#1724)
• Recipes for rolex, olfactometer, dozer blade, and hourglass entities
  (#2028, #2025)

New scenarios

• Beekeeping scenario (#1599)
• Fishing scenario (#1628)
• Dim sum restaurant (#1686)
• Gallery scenario (#1760)
• Snake automata (#1699)

Scenario mechanics and authoring improvements

• Path caching, for more efficient repeated use of the path command (#1595)
• Render any map to PNG (#1632)
• Extensible terrain (#1775)
• Spreadable plant growth (#1817)
• Exercising commands can consume entities (#1777)
• Recognize built structures (#1579)
• Test for point-to-point connectivity (#1721)
• Validate palettes (#1938), map shape (#1935), subworld references (#1875)

UI enhancements

• Fix REPL type display (#1610)
• Handle backword kill word event in REPL (#1861)
• Make log error messages ephemeral (#1877)
• Pretty print code blocks according to widget size (#1897)
• Automatically insert matching close brackets at REPL (#1953)
• Highlight only the part of the REPL input indicated as the location
  of an error (#1957)
• Popups for new achievements, recipes, and commands
  (#2027)
• Save current REPL input with down arrow
  (#2000)
• Customizable keybindings (#1979)

Command line options

• format subcommand now tries to preserve comments (#1845)
• Add format --v0.5 option to port code from older syntax (#1851)
• keybindings subcommand for displaying and initializing keybinding
  configuration (#1979)
• docs recipes subcommand now takes --forward and --next flags
  for filtering the output edges (#2033)

Building/packaging

• Add Windows build to CI (#1974)
• Native Windows support (#1617)