shebang backwards compatibility #307

The problem: backwards compatibility with old python scripts using non-standard shebang lines is not available. Old py launcher supported such shebangs, new one cannot.
example:
python script:

#!/opt/indel/bin/indel-python2
import traceback
import time

py.ini:

[commands]
/opt/indel/bin/indel-python2=C:\indel\share\python\python27\python.exe
/opt/indel/bin/indel-pythonw2=C:\indel\share\python\python27\pythonw.exe

Could you add a way to define non-standard shebangs again? e.g. in pymanager.json a list of shebangs and target exes like in old py.ini?

Alternative: We installed py launcher again, but this is legacy