Bugfix for bug #5
Bugfix for bug #5

BUG: In Windows, for some reason, the SQLite database cannot be removed even when I'm sure that no cursor is leaked, all the databases are detached, the database object closed, etc... With this 'fix', I just drop the tables and continue normally instead of removing the database file.
BUG: A cursor was being leaked after diffing databases (but after fixing that the database cannot be removed anyway).
Also, be sure to always detach the database, close all the cursors and close the database. Kind of a paranoid code.

joxeankoret/diaphora