Enhancement: Adding historical data for PWSes

[o355]

Description: Fixing historical weather code to allow PWSes to do historical lookups.

Checklist:

• Adding code to fix historical weather code
• Doing a mini-QA to see if everything is fixed

Estimated completion date: January 19, 2017

[o355]

Halted until all other minor 1.0.0 issues are fixed.

[o355]

Work will begin on fixing this starting at time point around June 20th.