Support batch creation if adapter implements createEach method (issue
Merge pull request #718 from Powpow-Shen/master

Support batch creation if adapter implements createEach method (issue #700).
fix cb/promise stuff for destroy
fix issue when createEach gets undefined values
Promisify validate
Merge pull request #722 from MCProHosting/promisify-validate

Promisify validate
revert merge

We don't want to mix interfaces (promises/cb) inside of waterline
fix tests
clearly define what's happening
fix connection mapping for cross adapter joins
0.10.13
bind model context to lifecycle callback not only its prototype