Fix parsing and precision handling for easting and northing values (#18)

* Fix parsing and precision handling for easting and northing values

* Fix formatting issues

* Address PR comments

Change MGRS regex to only parse 10-digit max numerical locations and trim easting/northing strings passed to precision determination

* Fix USNG parsing to correctly split numerical location

* Fix invalid northing value used in test

Changed pom files for release 0.4

Changed pom files for release 0.3

Changed pom files for release 0.2

Merge pull request #4 from dcruver/separate-artifacts

Separate artifacts