Added initial migration/relationship code, nowhere near ready
Started working on some basic tests
Added relationship column for to one relationships
Added identifier col
Improved model table init test
Got rid of license headers and ifdef guards
Cleanup
Tests now pass without having the model tables in schema.sql (migrated at runtime)
Cleanup
Improved quoting
Made priority public
Implemented nscoding for columns
Made columnsForTable only cache if the table exists, and return nil if it doesn't
Fixed NSData handling
Added saving of columns to the migration table
Cleaned up queries, switched to backticks in a couple of places
Added DROP and ALTER
Implemented support for adding columns in a migration
too many changes to list
Fixed a couple of migration issues, made migration test actually asser something