Merge pull request #30 from jeffakolb/master

I'm an idiot.
Started refactor of twacs
WIP - continue work on refactor
WIP - testing gnacs refactor
WIP -- working on custom output
WIP - converting value to value_list and moving limit into constructors
WIP - adding users static table
finish DB output lists, start first test
WIP - debugging file output
WIP - still debugging output
WIP - debugging db tables
WIP - cleaning up new functionality
WIP - additional work on documentation
WIP - continue updating comments and docstrings
clean up use of helper methods and unneeded comments
WIP - refactoring profileLocations code
WIP - pL now working
WIP - start refactor of activities table into more star-like structure
WIP - begin refactor for hashtag, mention, ... tables
finish refactor for breaking out hashtag table