Added leaflet 0.7.2

0.7.2 (January 17, 2013)

* Fixed a bug that appeared with **Chrome 32 update** that made all **mouse events shifted on scrolled pages**. [#2352](https://github.com/Leaflet/Leaflet/issues/2352)
* Fixed a bug that could break tile loading when using non-standard tile sizes. [#2288](https://github.com/Leaflet/Leaflet/issues/2288)
* Fixed a bug where `maxNativeZoom` option didn't work with TMS tile layers (by [@perliedman](https://github.com/perliedman)). [#2321](https://github.com/Leaflet/Leaflet/issues/2321) [#2314](https://github.com/Leaflet/Leaflet/issues/2314)
Merge pull request #2561 from microcosm-cc/master

Updated leaflet to version 0.7.2