Moved robot functions common to filter and table into robot.py. Implemented methods for calculating mean and variance, writing results to file, displaying table. Made some modifications to method names to make them more reflective of their implementation. Added table_test.py for testing table creation/variances/means/etc. Added logging support.

Note you will need to add scipy and numpy packages to your Python environment for this commit to work. (Can be done easily through PyCharm.)