Pull sqllite connection management into its own module
Move sqllite module to raco/raco
Move fake data and schema to a top-level module
Test sqllite data ingest, retrieval
Test sqllite schema lookup
better comment
Test num_tuples function
comment
Tests with key errors
Add delete table to database connection
Rename sqllite.pyto dbconn.py
Add table append to dbconn
Fix logic for table deletion
Test of empty relation
style fix
Add more type conversions to dbconn.py
Only append when there is at least one tuple
Use fully qualified name of input source
Use sqllite to back fakedb
Expunge references to sqllite from dbconn