Add list value type
Remove Unit
Remove If, Def, Do, and Apply value variants

Lots of compile errors :(
Fix up various pattern matching constructs
Add vim temp files to .gitignore
Merge branch 'master' of https://github.com/bjz/rusp
Fix make check build

The tests still fail
Update description in README
Use test! macros to give correct line numbers for failing tests
Add James Miller to AUTHORS
Handle evaling (), fix tests
Merge pull request #3 from bjz/dev-bjz

Add list value type