Analysis routines and Pandas version

[phockett]

Currently some issues with classifiers (tested on v1.2.3) which don't drop unclassified data in this case. Working OK on v1.0.1.

To do:

• Update testing envs.
• Test and debug - likely change in merge or pivot_table routines in _setWide or classifyFits? May be able to fix with dropna() prior to reformatting.