began working on offline tile caching
added permissions to read/write external and internal
Merge branch 'master' into osmtiles
added osmdroid-packager jar
fixed conflict
Merge branch 'master' into osmtiles
added sectors, turned off offline maps
initial pass at downloading of map tiles in place
Began refactoring offline tile code
reorganized tile packager
UNTESTED - moved tile fetching code from Activity to Service
added event listener support to tile downloader, added progress dialog
better interface for the offline tile system
updated osmdroid version, added custom tilesource class
Merge branch 'master' into osmtiles
minor refactoring in prep for packaging, documentation
refactored grout for lib packaging
moved everything to edu.columbia.sel package root, moved grout to separate library
added local repo and grout dependency [Finishes #74134086]
Added note about grout dependency to README