Modestmaps

- changes to MapProvider.sourceCoordinate to support non-Mercator bounds

- added inner and outer limits to providers and enforcing min/max zoom in Map.draw()
- changed zoomByAbout to use zoomBy (and draw/enforceLimits) before applying panBy

- fixed bug that could break zooming if setCenterZoom was called with a string

- removed assumption that layers go from 0 to 20

- added rational version numbering

May 2010, pre-semver

+ added setSize and setProvider methods (fixed the latter so that all loads are canceled)
+ optional interaction (factored out mouse handling... enables touch or keyboard later)
+ made a touch handler for iphads
+ made a TemplatedMapProvider
+ made a demo that accepts a URL template for a map provider
+ started to work towards jslint conformance
+ started to move to 80 character line length where practical
+ made a demo with two maps, synchronized
+ jslint fixes, 80 char lines, better sorting, removed createOverlay
+ templated providers wrap around in longitude by default
+ added a demo keyboard handler
+ positioning single tiles in onload instead of redrawing everything
+ added a zoom box demo
+ make sure the cache gets cleared after a while (BIG FEATURE)
+ don't load above/below north/south poles (for default mercator maps)
+ added a random subdomain helper to templated providers