More minus sign changes on angular couplings. Got missed back when all the minus signs were being changed before.

Fixing issue with tf2 where it duplicates real poles and zeros, only doubles and conjugates complex ones now

Adding in powershell script environment variables otherwise the conda powershell prompt doesn't work

Fixes to astigmatic lens component. Now has lens** and lens*** for astigmatic focal and power definitions

some code cleanup to remove compiler warning, fixing a bug with component names function get_comp_name()

adding new version string generation, using hard coded values when git not available and repkaceing first hyphen with dot

adding in changes to change into A.B.C versioning. The - added by git describe is now changed into a period