0.4.0

New functionality

• run_component now passes the cpus, memory_b, memory_kb, memory_mb memory_gb, memory_tb, memory_pb,
  memory_tb, memory_pb keys, defined in the meta dictionairy of the test module,
  as memory and cpu contraints to the executed component. The cpus and all memory keys
  can be set by using viash (ns) test with --cpus or --memory respectively.
  The memory and cpu fields can also be set to a hardcoded value in the test script. In this case,
  care should be taken to only specify one of memory_b, memory_kb, memory_mb, memory_gb, memory_tb, memory_pb.
  If more than one value for memory resources are defined and a conflict exists between the values,
  the value from the largest unit of measure is used.

• Added memory_bytes and cpus fixtures.