* Fixed undefined behaviour when starting arangodb with --database.check-version true as done by our scripts.
* Implemented the database version check in c++ and removed v8 dependency. Also hard-code role to SingleServer in that case.
* do not use V8 variant of AQL functions in early optimization stage when a C++ variant is available
* additionally, simplify AQL function definitions and aliases
* warn when more than 90% of max mappings are in use
* added C++ variant of replication catchup
* added `--log.role` option
* updated CHANGELOG
* removed non-existing scheduler.threads option from config
* removed useless __FILE__, __LINE__ invocations
* updated CHANGELOG
* allow a priority V8 context
* remove TRI_CORE_MEM_ZONE
* try to fix Windows errors & warnings
* cleanup
* removed memory zones altogether
* exclude system collections from collection tests
* return different error codes for check-version
* Adds data file for exit codes that can be used by ArangoDB applications
* add some exit codes
* better return codes for centos
* add codes in arangod
* remove test code
* prevent re-downloading of starter and other small improvements
* fix some erros
* finish centos
* update urls
* add info about systemd detection
* move further towards a working systemd setup
* set service type to simple
* add arangodb-update-db script
* start work on debian packages
* a db dir that is already in place (former installation) should be reused now
* fix minor bugs
* Implement exit code translation in the windows installer.
* add autogenerated NSIS exit code mapping
jsteemann
Michael Hackstein
Jan
Jan Christoph Uhde
Wilfried Goesgens