Algal States Plots

Initial visualizations to understand how variable the algal assemblage
is over time across the transects.
Minor formatting changes to Algal_States script
Algal_States script changes after Jul-30 meeting with Jonah
Diversity Index Attempt #1
Continued work on AlgalStates script
Merge branch 'Algal-States'
Merge branch 'master' of https://github.com/jonahps/EelRiverAlgalTransects