Pull request #34: CAS-14057 3
Merge in CASA/casa-build-utils from CAS-14057-3 to master
* commit '0e23d44ccc237f1c788046d52f5da936e1dcb4cb':
Use packaging.version to check the Python version for dependencies.
Remove whitespace
Pin python 3.6 conditional bdsf to the latest version that doesn't fail
Add conditionals for deprecated pipeline dependencies