Rpath 1.0.0

• Fix group parameter reference in adjust.scenario
• Fix Force bymort double-counting bug ecosim.cpp
• rsim step dyt fix in ecosim_multistep
• Removed old datasets
• Switch from single to double operators in ecosim.cpp
• Added examples to all functions
• Updated documentation/website
• Added package hex
• Added a bibliography file
• Created issue templates
• Added contributors guideline and code of conduct