Added wrapper for running phenology without complete WOFOST crop simulation.
Merge branch 'develop' of https://github.com/ajwdewit/pcse into develop
update docu of taskmanager
Merge branch 'develop' of https://github.com/ajwdewit/pcse into develop
Merging of the changes regarding the ParameterProvider into this
branch which has marginal changes compared to origin/develop.
reverted WOFOST models back to state still needing *data arguments instead of a ParameterProvider.
Changed following
- integrated improvements from GGCMI runs including
  * assimilation routines can now use the FORTRAN core routines
  * weekly output is now supported
  * taskmanager has been improved