Support for setting collation/charset at the schema level.
Porting of non-running migration test to new test running layout.
Resolves issue #19. Resolves issue #28. Resolves issue #17.
Should allow for changing the types for particular columns (Int, SmallInt, BigInt, Text, Char, Float, etc.).
This seems to work with the current migration test, however use of floats and such in model instances has not been heavily tested.
Likewise, in porting migration the full suite of index migration tests has yet to be ported.
Likewise, issue with dropping columns from a model persists and seems related to `defineProperty` in JDB core choking when used to try and undefine.
All unit tests continue to pass. The code snippets for adding indexes are the declarative versions of the methods used in alterTable(), so the indexes should be consistant with previous declarations/additions.
Should resolve bug #5.
As a side node, also removed the 'UNIQUE' clause from the `id` declaration as it is redundant with the 'PRIMARY KEY' declaration so far as I'm aware and results in what seems to be a second index getting maintained for no reason. (If I'm wrong about this I'd be intrested in the explanation. MySQL does have a lot of oddities.)