refactor a lot of er.Array
refactor a lot of er.Array

tjwei/jedi,jonashaag/jedi,flurischt/jedi,tjwei/jedi,WoLpH/jedi,jonashaag/jedi,WoLpH/jedi,mfussenegger/jedi,dwillmer/jedi,dwillmer/jedi,mfussenegger/jedi,flurischt/jedi