get all the data types to be consistent

[codeforkjeff]

Several tests in test_data_types.py are currently failing, and the issues around types are also what's behind the failures in TestDocsGenerateSqlite and TestDocsGenReferencesSqlite.

Here's some things the adapter needs to account for:

• sqlite reports a column type exactly as defined in create table statements, including the case
• loading seeds does a translation of Agate types to sqlite column types