libbutl - build2 utility library

Age	Commit message (Expand)	Author	Files	Lines
2017-04-29	Fix standard version stub to differ from empty version	Karen Arutyunov	2	-8/+7
2017-04-29	Add support for stub standard version	Boris Kolpackov	2	-8/+30
2017-04-28	Add standard_version_constraint::satisfies()	Karen Arutyunov	2	-6/+95
2017-04-28	Add support for standard version earliest pre-release	Karen Arutyunov	2	-18/+47
2017-04-27	Add standard_version_constraint struct	Karen Arutyunov	2	-0/+93
2017-04-26	Add standard_version class	Boris Kolpackov	3	-0/+333