sqlType="enum(..)" now set the valueSet attribute it is not required to use Propel::ENUM as type
add 'add_cleanup' option to SluggableBehavior

This option allows to remove the default implementation of 'cleanupSlugPart' and requests this method to be available by e.g. trait or inheritance.
Merge pull request #538 from havvg/feature/sluggable-no-cleanup

add 'add_cleanup' option to SluggableBehavior
Update generator/lib/builder/om/PHP5PeerBuilder.php

typo in doc
Merge pull request #539 from chaos0815/master

just caught this and directly decided to fork and change it.
Add PHP 5.5 to travis config
Improved getValueSet() method, added ENUM getters for SQL value, set Query filter to use SQL getters
Tests for improved ENUM handling
Merge branch 'master' of github:MaksSlesarenko/Propel
fix variable name on boolean filter methods
Merge pull request #543 from havvg/hotfix/boolean-query-api

fix variable name on boolean filter methods
Merge pull request #530 from MaksSlesarenko/master

Allow to create BasePeer::$enumValueSets without defining column as ENUM if sqlType="enum(..)"
Merge pull request #540 from rozwell/enum

Improved ENUM handling and added SQL value getters
Use model prefix in QueryInheritanceBuilder, fixes #542
Fix inconsistency for BIGINT. Fixes #459
Fix cast in setters. Should fix #283
Fix CS
fix for many-to-many recursive save
teaching propel to clear UP and DOWN when calling clearAllReferences(true)
we have infinite recursion prevention already covered
also we add an optional param to clearInstancePool. if passes as true it will clearAllReferences(true) on every
instance before clearing it.

Both these options together are useful when trying to stop memory leaks due to circular references during logn running jobs dealing with a lot of data.
Fix PR #544