new branch, lots of work to do to obtain the chemical process/kinetics model hierarchy
updates on files (#2848)
Chemical processes added, not yet finished (#2848)
(#2848) updates
Unit test for rates added and running
Checkpointing - roystgnr
start the sensitivity outputs, raised kinetics_unit tests threshold
(#2848)
updates

Description of prod/loss/net rates done (#2848)
Aesthetics: rate object have two layers of parameters:
  - input parameter and scalers
  - reduced parameters for fastest calculations
(#2848)
doxygen common folder local copy removing
first step to merging, main resolutions #2848
almost done, some weird results in kinetics_evaluator::compute_mass_sources_and_derivs, on it #2848
some tests and verifs yet to be done
all tests passed
Add missing std header
last merge with trunk, all ok #2848
Create README.md

Currently empty.
Updating README.md
Formatting README.
Added build instructions to README.