RHESSysIOinR version 2.0

Adds series of IOin_XX functions to standardize data input and parameter/scenario generation. Restructured main function into run_rhessys_single and run_rhessys_multi, and added parallelization to the later. File writing and core features within run_rhessys_single are now largely standardized into discrete functions.

v0.2

Fixed bug in the generation of dated sequence

Initial 'working' version with parameter setup inside of run_rhessys

v0.1

Version 0.1