Changed
- Fixed typos in logging
- Creation of database and scheme as well as insertion of the KG data was
moved to a special class called `AutoLoadableSQLiteKG`. The `SQLiteKG` isn't
handling this anymore. It only expects a URI for the database connection,
and expects the database to represent the KG already.
Fixed
- Issue [1](https://github.com/khaller93/sqlitekg2vec/issues/1): SQLite KG was
changed into a lightweight class such that it can be pickled properly for
multiprocessing.