fixed a bug with gl game capture where it was using a NULL window handle to initialize the swap chains.  surprisingly, it still worked on some video drivers.
updated main header to 0.552
updated file versions to 0.552b
...removed "bla version" from the version string
Added Youtube as a service in the services listing
added keyint recommendation for youtube
Merge pull request #277 from Gol-D-Ace/youtube-keyint-services.xconfig

added keyint recommendation for youtube
... the reason why i normally don't touch this stuff
Merge pull request #278 from Gol-D-Ace/youtube-keyint-services.xconfig

... the reason why i normally don't touch this stuff
Latest strings from crowdin
Merge pull request #280 from Gol-D-Ace/crowdin

Latest strings from crowdin
add "capture layered" into window capture
Merge remote-tracking branch 'origin/master'
Display volume percentage when altering volume (volume control)
Merge branch 'master' of https://github.com/jp9000/OBS
Added OSGetFileModificationTime
Added CreatePath
Added shader blob file cache

To offset the huge compile time for shaders with complexity similar to the yadif shader
CrashError if DrawTexture or DrawSolid shaders cannot be loaded
Update window title on profile name edit

Closes #279