Introduce watchdog

and other improvements

added 25 commits

• 00832ffe...9438e9cc - 6 commits from branch master
• 5aae5383 - fix writing to mailbox
• 547f07ae - make terminals ready for SDOs
• 0937d327 - add one more test for if
• c3241b5e - improve handling of longs
• 88f19a00 - improve signed comparison
• bc2e4bc9 - fix weird short address EBPF concept
• 2c236f83 - add more terminals and compatibility thereof
• 7abb1226 - fix tests for long/short
• b95a1001 - fix locking
• 59803bd9 - encoder position is signed
• a51d5568 - intermediate
• 78d55807 - make and and or comparisons work
• f00e3c6d - introduce a watchdog
• 0163de03 - first time only read data
• a1b88c27 - do not use XADD where not allowed
• 188833d3 - generate backup packages
• 4a3be7c9 - introduce an artifical package dropper
• d45fd27c - add test for XADD
• 505af197 - update tests and fix code accordingly

Compare with previous version

merged

mentioned in commit 85702979