Bug fix: Dict.itervalues on py3

v2.6.2

Update requests.py

Fix for build tooling and testing. Oh and py2.6 support is removed.

v2.6.1

release version 2.6.1

Py3, 2 new supported params and bug fixes.

• added User-Agent parameter (&ua) and override IP address parameter (&uip).
• bug fix on __escape_extensible_value: handles unicode objects now.
• added py3 support using six.

pyga is no more a namespace package

Release 2.5.0 - Incrementing major version number

Since, package is no more a namespase package, It deems good to make it
a major release.