Initial generic functions added
Skeleton of initial and pretty basic API
Merge branch 'master' of https://github.com/VizGrimoire/VizGrimoireR into its-refactoring
Add Open states and testing
Add openers functions and tests
Closed issues and tests
Add closers and tests
Add changed issues and tests
Add changers and tests
Add BMI index and test
Add lists of countries, repos and affs and tests
Add last activity functions
Added old top xxx functions
Markov and summary companies studies added
Add people information
Minor changes
Merge branch 'its-refactoring'