0.6 small updates

Added a JS option to the mosaico page to prevent to accidentally navigate away with unsaved changes. This needs to be activated in the settings.

MailingTools 0.6.1

Added some safeguards to [#2]

0.6 stable

• Anonymous link tracking (#2)
• Fix for contact hash in mosaico (#3)
• Multiple bug fixes

Added binary download with necessary dependencies for email checker