Add typecast to string in the ORM schema (#77)

Merge pull request #76: Small primary

Merge pull request #75: Use schema modifiers as mutable

Merge pull request #73: support for generated fields

Merge pull request #72 from cycle/feature/show-changes

Add PrintChanges generator

Merge pull request #69: Call the method only if there are additional …

…options

Merge pull request #68: deduplicate indexes if FK outer key is PK

Merge pull request #67: Add the ability to configure foreign keys

Adding class-string return types (#66)

Fix typecasts list merging; add Defaults registry (#65)