CLIMATE-540: Add SpatialMeanOfTemporalMeanBias class and unit test
CLIMATE-540: Change name of MeanBias to TemporalMeanBias
Resolve CLIMATE-540. Merge PR #123.
CLIMATE-541: Port calcRootMeanSquareDifferenceAveragedOverTimeAndDomain method to ocw/metrics.py as RMSError.run
Resolve CLIMATE-541. Merge PR #124.
CLIMATE-549: Update variable names in RMSError
CLIMATE-549: Correct comments in SpatialMeanOfTemporalMeanBias
Resolve CLIMATE-549. Merge PR #126.
CLIMATE-542: Add TemporalCorrelation metric and unit tests
CLIMATE-542: Swap x and y names (lats = y axis, lons = x axis)
CLIMATE-542: Update names of test methods
CLIMATE-542: Make variable names more meaningful
CLIMATE-542: Change from camelcase to snakecase
Resolve CLIMATE-542. Merge PR #127.
CLIMATE-550 - Drop bottlemet module from ocw-ui backend code
CLIMATE-551 - Drop old RCMET toolkit from codebase
CLIMATE-552 - Drop unused private functions from local.py
CLIMATE-552 - Remove dead code from local.py
CLIMATE-552 - Comments and minor code cleanup

- Cleanup doc strings and in-line documentation.
- Remove unneeded list conversions of sets.
CLIMATE-552 - Line length fixes and readability fixes

- Correct PEP-8 incompatible line lengths.
- Adjust variable name and add additional comments to load_file for
  clarity.