Merge pull request #26 from bgamari/master

Implement underivable instances for Point
major version bump
Cleaned up Linear.Core with lens synonyms. Added example. Renamed incore
to column.
1.4 CHANGELOG
Added $setup block so the tests can pass.
Removed trailing whitespace
Added 'unit' to Linear.Vector
Added a proper lens dependency, rather than continuing to dance around
it
Ixed V
added a type for basis elements
copyright update
Lens instances for V0-V4
Added Covectors
Representable V0-V4
Swapped out Core for Representable
Ixed Plucker
Moved `column` to Linear.Matrix. Greatly simplified `translation`
more quaternion instances
Removed Core. It is fully subsumed by Representable now.
Added Linear.Algebra