Use Closure type identification functions
Make maximum number of tiles loading a parameter to loadMoreTiles
Boost number of loading tiles when not animating or interacting
Only reprioritize tile queue when more tiles will be loaded
Compute number of new tiles to load exactly
Correcting or and adding not

Previously, OR filters always returned true (fixes #500).
Convenient factories for logical filters
Doc fixes
Fix bootstrap.min.js path in overlay example
Merge pull request #502 from fredj/misc

Fix bootstrap.min.js path in overlay example
Shuffling jsdoc files, as suggested by @elemoine
Assert that loadMoreTiles is only called when more tiles will be loaded
Only manage the tile queue if it is not empty and improve comment
Add value/resolution functions to View2D
Fix OpenStreetMap attributions
ZoomSlider setMap deals with undefined resolution
 Make ZoomSlider use View2D value/resolution funcs
ZoomSlider animates to final resolution
Merge pull request #498 from twpayne/boost-tile-loading

Boost tile loading
Do not assume map.getView returns an ol.View2D