v1.19.0

Bugs:

• Do not pack binary with upx for armv7/arm64 due to illegal instruction errors (#191, thanks to @iexos)
• Do not allow comma in topic name in publish via GET endpoint (no ticket)
• Add "Access-Control-Allow-Origin: *" for attachments (no ticket, thanks to @FrameXX)
• Make pruning run again in web app (#186)
• Added missing params delay and email to publish as JSON body (no ticket)

Documentation:

• Improved e-mail publishing documentation