reactphp / filesystem

@WyriHaximus

Removed use of EIO_O_FSYNC constant as has been removed from ext-eio #44 by @WyriHaximus
Replace ext-eio state call with Filesystem::stat call in streams #48 by @CharlotteDunois
Change promise usage to recommendation #49 by @CharlotteDunois

@carusogabriel

Improve Travis set up by @carusogabriel (#14), @WyriHaximus (#28, #29, #30, #31)
Improve testing by @carusogabriel (#15), @WyriHaximus (#37, #27)
Improve documentation by @seregazhuk (#16, #17), @localheinz (#41)
Improved error handling by @seregazhuk (#19), @WyriHaximus (#25, #40)
Support for latest dependencies (evenement, react/stream, react/event-loop) by @WyriHaximus (#22, #24, #35, #36)
Rename directories by @seregazhuk (#20), @WyriHaximus (#26)
Added binary file support by @WyriHaximus (#39)
Improve adaptor detection support by @CharlotteDunois (#42)