adding support for backgroundSize

adding support for backgroundSize
added test for background size pixel get and set

added test for background size pixel get and set
Merge pull request #2421 from kentaromiura/bugfix-2420

fixes #2420
Hello 1.5.0 dev.
Add Fx.isPaused() method
fix #2159: specs for Fx.isPaused()
fix #2159: whoops extra dot
Moved Fx.isPaused from 1.3 to 1.5 specs.

Updated and created configuration for 1.5 specs.
Fixes #2327 - Move the Flash Detection to 1.4compat
Move Swiff to MooTools More
saving a ref in order to remove the unload method

saving a ref in order to remove the unload method
add some test
adding a further check

adding a further check
Merge pull request #2423 from kentaromiura/fixbug-2296

fixes #2296 - saving a ref in order to remove the unload method
Better fix for #2296 and #2423 - doesn't wrap onunload functions in addListener anymore.
Update Docs/Request/Request.md

Indicate that iOS 6 also caches AJAX requests. 

http://stackoverflow.com/questions/12506897/ios6-safari-caching-ajax-results/12521180#12521180
Fixes #2402 - String.prototype.contains is now implemented according to the new ES6 standard

- Moved the old String.prototype.contains implementation in 1.4compat
- Using good old indexOf at other places
Add !ES6 blocs for String:contains
Update documentation for String:contains
Merge branch 'standard-contains' fixes #2402
Merge pull request #2429 from barryvan/patch-1

Update Docs/Request/Request.md