Fixed bug in error handling (#100)

Updates for v1.3.0 (#91)

* Added support for storing the state of the Event Processor along the
Checkpoint. Both Checkpoint and the EP state are stored as pickled
objects.

* Fixing pylint complaints.

* Switched from pickle back to JSON for lease persistence.

* Fixes bug when accessing leases that don't contain EP context. Also,
minor renaming.

* Better SAS token support

* Fixed pylint

* Improved auth error handling

* Test stabilization

* Improved stored EPH context

* Updated EPH context storing

* Skip test on OSX

* Skip tests on OSX

Fail due to large message body bug.

* Some cleanup

* Fixed error handling

* Improved SAS token parsing

Updates for release 1.2.0 (#81)

* Made setup 2.7 compatible

* Separated async tests

* Support 2.7 types

* Bumped version

* Added non-ascii tests

* Fix CI

* Fix Py27 pylint

* Added iot sample

* Updated sender/receiver client opening

* bumped version

* Updated tests

* Fixed test name

* Fixed test env settings

* Skip eph test

Merge pull request #69 from annatisch/master

Fixed bug in Azure namespace package

Merge pull request #68 from annatisch/develop

Python 2.7 support

Merge pull request #65 from annatisch/eh_scenarios

Issue fixes

Merge pull request #55 from annatisch/eh_scenarios

New send settings + auth timeout

Merge pull request #51 from annatisch/eh_scenarios

EPH improvements

Merge pull request #44 from annatisch/eh_scenarios

Stability improvements

Merge pull request #39 from annatisch/rc1

New release