Before updating CleanSQL to use StringBuilder
Regexes working as expected so far (still to test lots of edge cases)
Prototype solution currently works, but is inefficient. Still need to:

  * make it use StringBuilder instead of string (prob need to account for changing
    string length in respect to regex match index positions).

  * account for blank lines and leading carriage returns presently being left behind by Split()
Code tidied, and using StringBuilder for efficiency where possible.
Merge pull request #3 from rachelppierson/ImplementMigrationFunctionality

Implement migration functionality