added add_wme_to_rete
Check for null pointers.
do not require agent for epmem
fix for simple matcher with new rete constructor
update for constructor on rete unit test
Changed capitalization.
Updated function names.
First pass at epmem storage unit test.
Updated unit test.
Fixed order of id, value in epmem_set_variable.
Initialized var_key values in epmem_rit_state_graph correctly. SaveToDb
test passes now.
Added comments.
Added unit test for temporal_symbol_hash table.