Update to version 0.3.1 

Merge pull request OpenDroneMap#567 from dakotabenjamin/03RC-bugfixes 03 rc bugfixes

Merge pull request OpenDroneMap#551 from dakotabenjamin/master Get ready for beta v0.3

Bug fix for 0.2, replaces link to OpenGV 

Merge pull request OpenDroneMap#433 from OpenDroneMap/raw-resize-data Keeps original images pristine in georef

Update README.md 

Merge branch 'dev-pull' This merge is a major beta update to be released as v0.1. See changelog for details.

Compress test data images 

Merge pull request OpenDroneMap#236 from OpenDroneMap/ccd-changes Ccd changes