Call of Nil v0.3.1

This is an early preview. The game is still under development and not yet ready to play.

What's Changed

• fix: ensure correct url scheme by @ferreira-tb in #308
• fix: remove terminal by @ferreira-tb in #309
• chore: update manifest by @ferreira-tb in #310
• chore: set explicit crate versions by @ferreira-tb in #311
• chore: update manifest by @ferreira-tb in #312
• fix: enable lua 5.5 by @ferreira-tb in #313
• docs: use absolute url by @ferreira-tb in #314
• chore: update dependencies by @ferreira-tb in #315
• fix: remove NIL_DIR env var by @ferreira-tb in #316

Full Changelog: v0.3.0...v0.3.1