Revert "Merge branch 'master' of https://github.com/fomin-stas/rgu"

This reverts commit e8cecdc3c51e6827b5e7fd48ca5fe57dfb05623f.
Revert "Merge branch 'master' of https://github.com/fomin-stas/rgu"

This reverts commit 5566322c0e5b424df6ac0091a20893556bba2ce2.
Revert "Revert "Merge branch 'master' of https://github.com/fomin-stas/rgu""

This reverts commit a628bb627ba0c089d4317c2bb41813f9acbf31c2.