guide WIP [skip ci]
finished quick start about database [skip ci]
added missing hint [skip ci]
guide WIP [skip ci]
guide WIP [skip ci]
Finished the quick start guide. [skip ci]
fixed apidoc inherit
Fixed the issue that `ServiceLocator` still returns the old component after calling `set()` with a new definition
allow using errorhandler from the app namespace

fixes #3431
added ErrorHandler::deRegister()
changelog
typo
improved docs for AR::findAll()
allow non-lowercase package names

fixes #3438
updated the lifecycle chart. [skip ci]
renamed ErrorHandler::deRegister to unregister. [skip ci]
simplified errorhandler registration.
added errorInfo to exception views