Added methods to actuation and calcs modules to better calculate GDS terms
Added methods to actuation and calcs modules to better calculate GDS corrections following T1900169 updates in v5
This requires changing the exports of transfer functions from CALCS ANALOGs because we only want to export the part that is potentially incorrect (gains are fine to leave out). Since this update fixes some issues, I had to also update the unit tests, and write a few more
Addresses #104 (closed)