Merge pull request #113 from Sukei/master

Code cleanup
Added entities builder and raw type in documentation.
VERSION 1.2-RC2
Updated documentation.html
Added Row concept.
Updated documentation
Apigen clean up and update.
createWhereIn escape placeholder bug.
Bug in prepared queries placeholders.
Better PgRow test.
Added BaseObjectMap::aliasField method.
Updated README.
Aliased master branch as 1.2-dev in composer.
Added composite abstract type.
Updated documentation for composite type.
Added timestamptz conversion.
Logger to debug each query.
Got inspected by sensiolabs insight(tm).
Set timezone for DateTime passed as argument.