fixed range for empty slice
Merge remote-tracking branch 'upstream/dev'
Merge branch 'dev' of https://github.com/mailru/FileAPI
* debug
* fixed docs
* docs: fixed code examples
#82: 'undefined' data-fields cause exceptions
* #83: Allow requests without files
Merge branch 'dev' of https://github.com/mailru/FileAPI
fixed abort handling
Merge pull request #84 from wingedfox/master

Fixed connection abort when waiting for connection recovery
#84: Fixed connection abort when waiting for connection recovery
#85: add github.io to crossdomain.xml
store file read position for smart upload restart
#87: Fixed upload files into browsers that do not support FormData
added parseInt radix
Merge pull request #86 from wingedfox/master

Smarter upload recovery
#87: correct decision for not 'photo' files
Merge branch 'dev' of github.com:mailru/FileAPI into dev
#86: Smarter upload recovery