Merge pull request #2 from g3force/migrate-to-log4j2

Migrate to log4j2

release v2.4

#1 - Use empty spezi for initial default value when loading class

release v2.2: Add a setter for the default config path

release v2.1

merged

too much redundancy...

increased pom version

Merge branch 'master' of https://github.com/g3force/configurable.git

fixed sorting of fields (HashMap...)