remove subcommand fails due to unresolved sdsimplefilter import #185

Default selection file for CMIP6 project is now delivered empty - issue 

#178

synda allows that ESGF openIDs are case sensitive - issue #177

anaconda / ipsl channel has been removed (issue # 176)

new customizable config parameters

cleaning & packages reorganization

entry point moved to setup.py instead of meta.yaml file

Added conda env detail

add CDS variable event

add CDS variable event