Add validator support for pointer to struct#72

Open

smthpickboy wants to merge 2 commits intokoding:masterfrom

smthpickboy:master

Commits on May 21, 2018

Add validator support for pointer to struct. fix https://github.com/koding/multiconfig/issues/71
xiangtieyao
committed

Commits on Jun 6, 2018

Remove FlagLoader from DefaultLoader, because it's unusable, refer to: https://github.com/koding/multiconfig/issues/75
xiangtieyao
committed