Subject: Modifications to the externally-callible (usually by R) API
Name: NLCrookston
Date: April 1, 2022
Variants affected: All

Description: 
Added a stop point 7, returns after the trees are read, but prior to dubbing
of missing measurements. Added api calles to set/get multipliers via the 
fvsSpeciesAttributes code.

Impact on users: Additional funtionality is provided, everything is backwards compatible
so there is only impact on users who take advantage of the additional functionality.

Files:
base/apisubs.f -- edited some comments. Added code to get/set multipliers
base/cmdline.f -- change max stopping points to 7, changed return rule so that year can be zero.
common/MULTCM.F77 -- edited some comments.
common/GLBLCNTL.F77 -- edited some comments.
common/CONTRL.F77 -- edited some comments.
base/fvs.f -- added stop point 7 to return control after notre, prior to calibration
tests/APIviaR/Rapi.R -- added a test for new stop point 7 and to test get/set of 
  multipliers.

