wqbc v0.3.1

wqbc v0.3.0

wqbc v0.2.1

Set EMS non-detects to 0 based on RESULT_LETTER

- Retain RESULT_LETTER as ResultLetter
- Allow retention of arbitrary EMS columsn

release 0.1.0

updated news, and License and cancelled private travis

- `calc_wqis` now calculates 95% bootstrap confidence intervals by re…

…sampling with

replacement on rows for 10^3 replicates

Released new version number as wqdata now dependent

Completed coding of all functionality.

- Finalized limits.csv and codes.csv files