Basic Parser function type.
Literal parsers.
Map parsers.
Merge branch 'master' into combinators
Document the typealias.
Test parsing literals.
Easier testing with Optionals.
Test literal parse trees.
Test unmatched input.
Test exact input.
Add a concatenation operator.
Section the tests.
Concatenation.
Add a workspace.
Add Either.
Add Box, Either, and Prelude to the workspace.
Link against Box, Either, and Prelude.
Test concatenation parse trees.
Extract the concatenation parser.
Test that concatenation parses completely.