* isolated crashing job
* bisected test
* bisected test
* bisected test
* bisected test
* bisected test
* bisected test
* bisected test
* traced to crash
* traced to crash
* traced to crash
* heisenbug, forced codegen change for get_map_iterator_for(const std::type_info&)
* tried another codegen change
* extended fix and unbisected
* fixed fix and restored testsuite
* restored GHA jobs
* added Drone and GHA CI support
* given drone.sh execution permissions
* relaunched CI after Drone setup
* relaunched CI
* split jobs to avoid timeouts
* worked around too big obj files
* [skip ci] updated README.md
* [skip ci] fixed links