v1.5.0

• Allows static calling of Model subclasses, ignoring namespace info during table name generation [michaelward82] - issue #90
• Prevent invalid method calls from triggering infinite recursion [michaelward82] - issue #75
• Allow chaining of the set() and set_expr() methods [naga3] - issue #94
• Add HHVM to travis-ci build matrix [ptarjan] - issue #81
• Improve join documentation [rhynodesigns] - issue #92
• Improve code docblock [michaelward82] - issue #91
• Improve code docblocks and whitespace [michaelward82] - issue #93
• Improve connections documentation [kkeiper1103] - issue #79