fix FeatureGroup getBounds
fix Map hasLayer
fix LayerGroup hasLayer
fix build
fix old IE and stricter jshinting
Fix build
Add hasLayer tests
Make GridLayer methods safe to call pre-setView
bring this._map check back
add {r} format to url, which returns @2x when retina detected and enabled
fix retina condition
Make options object prototype-inherited

Fixes #2294
Use L.Util.create for class extension
Adding Leaflet logo in svg format
use lighter extend in setOptions, simplify extend
Merge pull request #2300 from Leaflet/prototypal-options

Make options object prototype-inherited
Run logo svg through svgo
Merge pull request #2304 from jacobtoye/master

Adding Leaflet logo in svg format
made the logo pretty-printed for consistency
Do not ignore custom build parameters

Regression from 941b20671456c6db98414519fb30baee81ea4bfa ("improve size
reporting when building and add gzipped size").