MSSQL TODO

MSSQL Fork TODOs:

Typical engine tests for mssql.pm
POD for new()’s _driver attr (or do we?)
Determine DSN/URI logic (e.g. look at discussion in PR #6 and grep for ?how does $uri->dbi_dsn know what $self->driver to use?)
- Created mssql_multi_driver_dsn branch on [https://github.com/drmuey/sqitch/tree/mssql_multi_driver_dsn](my fork)
- Forked https://github.com/drmuey/uri-db for pull request.
Determine if the this being necessary seems like a bug, no? comment is a thing or not.