bump to 6.0.0

Use 200 as success code in SaveAlbum/SaveTracks/SaveShows, closes Joh…

…nnyCrazy#496

prepare last last beta - beta.11

prepare last beta - beta.10

prepare beta 9

prepare beta 8

Prepare beta.7 and some README fixes

Prepare 6.0.0-beta.6

prepare beta.5

6.0.0-beta.4 prepare