casa6

Merge pull request #521 in CASA/casa6 from CAS-13439 to master

* commit 'a5d48016788755a11348882a140d4dbf31bdc466': (21 commits)
  updated docs, added test
  Add missing import for measures
  Removed left-over casatasks import
  New test script for the simulator tool. It exercises sm.predict as described in CAS-13439. This script contains one test case.
  reverted test in lieu of scastro commiting new test script
  added test verifying sm.predict() supports plp spectral models
  remove debugging cout statement
  allow ints for spectral index coeffs
  added plp support verification test to test_req_task_ft.py
  add plp test to ia.fromcomplist
  add tests for new componentlist features
  commit before switching branches
  refactor
  updated docs, implemented plp support in setspectrum()
  refactor
  bugfix
  style changes
  update all ComponentModel tests so they compile and run successfully
  version which compiles
  initial implentation of PowerLogPoly,
  ...