New bug fix release 0.94.1

This is another bugfix release implementing further patches. Some upload plugins have been removed because the upload services have shut down (ITmages, Minus, TwitPic).

Following changes in dependencies are there: perl-json-xs has been superseded by perl-json-maybexs; perl-webservice-gyazo-b is a new optional dependency for upload to Gyazo.

Following update plugins are known to be still broken: Dropbox, vgy.me.