More appropriate decimal count (1) for speed
TODO update
Placeholder settings view
Add basic GPX support, include KMZ+GPX in email
Use ZIP for GPX with .gpx.zip extension
Use DEFLATE for ZIP, previously used STORE (no compression)
GPX improvements: better time format, metadata

Avoid unnecessary zero milliseconds in timestamps (e.g. 11:22:33.000Z
written as 11:22:33).  Improve metadata, add Offtrail version and commit
info to comments.
Minor email body improvement
README update
TODO update
Use 7 decimals for lon/lat in gpx and kml
Add a persistent settings object
Settings stuff, work more on fix POST
Better settings upgrade behavior
Visibility API basics
Example pushserver
Add OpenStreetMaps fix