Add unit-tests for events + WeakRef for NFR #663
Fix when Model call setSchema("") bug
Updated
Use PHALCON_IS_NOT_EMPTY
Fix memory leaks
Merge pull request #1291 from sjinks/memleaks

[1.3.0] Fix memory leaks
Merge pull request #1230 from dreamsxin/model

Judgment schema_name is not NULL, to judge is not empty
Merge pull request #1219 from dreamsxin/events-weak-ref

Add unit-tests for events + WeakRef
Merge pull request #61 from phalcon/1.3.0

Merge 1.3.0