Add a test for more of the pull request API including creation
Add semantic errors, add merge commands, change Issues submodule to Issue for parallel naming and to avoid clashes
oasis generated files
Issues are *updated* rather than *edited* to stay linguistically parallel with the other interfaces and match CRUD
update CHANGES for upcoming release
Merge pull request #14 from dsheets/master

Rest of Pull Request API + Tests + Semantic Errors + Monadic Matching