0.01 (initial version)
0.02 (Rewrite of join syntax, cleaned up documentation)
0.03 (modified documentation, cleaned up minor non-fatal syntax)
0.04 (added between, fixed query execution logic, adjusted documentation for logical operators)
0.05 (insert now allows function calls as values, generic cleanup)
0.06 (error in sort, resulted in failing tests, and an error in clause
routine)