Don't use a string when you can use a symbol
Refactor memorization pattern
Tidy User#from_github
Refactor user#stash_list
remove duplicate text in grains assignment description
Minor refactorings
Fix #749 - Respect newlines as per Git Flavoured Markdown
Merge pull request #769 from iHiD/refactor_time

Some minor refactorings
Merge pull request #770 from iHiD/fix_749

Fix #749 - Respect newlines as per Git Flavoured Markdown
Merge pull request #768 from alpardal/fix-grains-description

remove duplicate text in grains assignment description