Documentation Update
Update
Merge branch 'master' of https://github.com/toroidal-code/brick-lang

Conflicts:
	doc/core/03_lexical_structure.md
Syntax update
Merge branch 'master' of https://github.com/toroidal-code/brick-lang

Conflicts:
	examples/demo.bl
Proof-of-concept indent-based lexer
Merge branch 'master' of https://github.com/toroidal-code/brick-lang