Initial implementation
Fix inconsistency with xp-framework/rfc#214
See https://github.com/xp-framework/rfc/issues/282#issuecomment-51991795
Fix fatal error
Do not always initialize type variables at begin of method
Instead, check for their usage inside method bodies and replace with a
lookup on the __generic static holding a map keyed by placeholder with
the type variables' types
Remove now-conflicting __generic member
Left-over from first generic implementation, see xp-framework/rfc#193,
which was dropped around three years ago and removed back in Nov 2013
Fix offset not contained in Vector's string representation
Merge branch 'master' into rfc/0282
Make types usable inside strings
Merge pull request #25 from thekid/rfc/0282

Generic type variables
Implement xp-framework/rfc#282 with PR #25