opengeo/GeoGit — pull request #320 by volaya (2013-06-06 18:17:40+00:00)
Title: Added additional OSM commands

This commit adds commands to import/download from overpass API, export to OSM formats, and export diffs as changesets
It also adds functionality to create mapped datasets from OSM data, export them to shp/pg/sl, and unmap them

It modifies the ExportOp and BranchCreateOp to add some extra functionality that is needed