Add support for altering columns to SQLite

[nickrum]

The approach I took to parse CREATE INDEX statements using regexes was unfortunately not flexible and robust enough to properly parse CREATE TABLE statements. I replaced it with a tokenizer and parser combinators. The grammar is based on the SQLite documentation.

Any idea where the formatDefault() function would fit? It is currently directly inside the ColumnCompiler class which doesn't feel right.

[kibertoad]

Unit tests seem to be failing now.

[nickrum]

Very strange... This seems to be caused by requiring Raw inside formatterUtils. Any idea what the actual cause of this is and how to fix it?

[kibertoad]

@nickrum I would imagine a circular dependency happening.

[nickrum]

@kibertoad Good catch, Raw is indeed circularly depended upon.

[kibertoad]

Thanks!