update SharpCompress lib

Merge pull request QL-Win#350 from rabelux/UpdateREADME

Updated readme

Fix QL-Win#337: Exif rotation is broken in WPF

minor

copy buffer before showing

fix possible crash (?) due to DateTime format

fix crash

Merge branch 'master' of github.com:xupefei/QuickLook

use vc2008 binaries

add volume slider