fixed mvolts issue in WFP function
Merge pull request #158 from crisien/opt

fixed mvolts issue in WFP function
Adds polycal algorithm (work in progress)
Adds finishing touches and test for the polycals algorithm.
Optimizing pH functions, and fixing some errors in the code
Edits readme for ph functions and adds some minor tweaks
Adds the polycals cython extension
Merge pull request #160 from cwingard/phsen

CIDEVMI-1037 Updates and Optimizes PHSEN Calculations
Merge pull request #162 from lukecampbell/cals

M086 - Polynominal Calibrations (Secondary Calibrations)
Adds type checking and testing for polycals
OPTAA tscor wavelength range extension
Merge pull request #163 from desiderr/tscorfix

CIDEVMI-1069: OPTAA tscor wavelength range extension
Code cleanup
Code cleanup and commenting for polycals
Code cleanup for spike
Code cleanup of gradient
Merge pull request #165 from lukecampbell/cals

Polycals testing and Code Cleanup
Edits based on DPS author inputs
Merge pull request #166 from cwingard/phsen

CIDEVMI-1037 Edits PHWATER based on DPS author inputs
THSPHTE data products, initial code