Merge pull request #309 from cjemagid/3.0-beta

added a flag  to prevent reload when necessary  after save.
bug in the 'set' method .
Merge pull request #310 from cjemagid/3.0-beta

few fixes for 3.0
Merge branch '3.0-beta' of github.com:SkyPHP/skyphp into 3.0-beta