Version 0.68

• updated signal-cli to version 0.12.1
• made it possible to set the QR-Code version with the qrcode_version parameter in the qrcodelink endpoint
• added bold, italic, strikthrough and monospace formatting to send endpoint
• fixed bug in group create endpoint
• improved Home Assistant documentation - thanks to @developersteve
• improved documentation - thanks to @testwill
• added max_messagesquery parameter to receive endpoint - thanks to @k-bx
• improved error handling - thanks to @roschaefer
• added endpoint to refresh a group - thanks to @greyson-signal