v0.4.2

[rdnfn]

• Feature: defining all relevant options/kwargs of CLI an API is now supported
  yaml files (Make command line options possible to set via config yaml/dict #54)
• Feature: allow multiple configs to be given to both CLI
  (giving multiple -c options) and Python API (as a list) (Add support for multiple --config args #51)
• Fix: adapted Energym env reset() method to avoid triggering
  long warm-up times with additional simulation runs (Questionable warm-up period in Energym integration #43)
• Fix: enable container build even if prior build failed midway
  and left artifacts