Updated this PKGBUILD to Qt6, too

@agapito I'll update qmplay2 package (not git) to use with Qt6 after new release.

Plasma 6.0 is almost here. Can you update PKGBUILD to build qt6 version instead qt5?

This is -git but not using the VCS pkgver guidelines

@Dante_Igashu libwebpmux.so.3 is a file from libwebp 0.6.0 which is currently in testing repository. FFmpeg links to libwebpmux library. Maybe it is a bug in package that it links to newer library which is currently unavailable or you mixed different repositories.

Am I the only one getting this error?: "QMPlay2: error while loading shared libraries: libwebpmux.so.3: cannot open shared object file: No such file or directory" (I get the same error on Clementine after updating "gst-plugins-bad", "ffmpeg2.8 " and "ffmpeg" on 04/28/2017)

Problem seemed to be qt5-styleplugins.After a reinstall qmplay runs ok :) Thanks for the help @zaps166

@dripdrop I don't have any problems. Try to update your OS once again (-Syyu) and recompile qmplay2 once again. You must have all Qt libraries which loads together with QMPlay2 in the same version. Probably Qt tries to load other modules/plugins which are currently in 5.7.1 version on your computer.