bug-fix release
This is a bug-fix release and solves these issues:
- Current monetdbe wheel and test container give error: Crypt backend hash not found bug #68
- Improper error message bug #63
- fetchdf() and fetchnumpy() do not work for all data types bug #62
- lowlevel.query() sometimes receives empty connection #60
- Crashing on MONETDB url (monetdb://localhost:5000/) bug #49