SQLite migration cannot handle all CREATE TABLE queries
I was implementing the use of the `drop_column` method in the `SqliteMigrator` when I found a bug.

I tested the result by changing my database model using sqlitebrowser. The `CREATE TABLE` query sqlitebrowser  generates, contains newlines and ` characters around the table name. This differs from the peewee `CREATE TABLE` queries and the migration code does not support this.
