fixed bugs with aggregations, udf execution, conversions and examples
fixed examples arg parsing
Added more features to the benchmark:
- ability to do heap profiling
- ability to use different key generators
- key set generator, allowing for consistent set of keys to be used during test

Exists example cleaned up.

Added more .gitignore entries.
AER-2706 #fixed - removed erroneous free
added apply.py example. added args for get.py
v1.0.13
fixed a leak with the key's digest.
fixed a leak with byte arrays. also made sure to deref unicode strings
v1.0.14