0.1.1 Release not installable with pip

[stekman]

First try:

pip install pytest-approvaltests
Installing collected packages: pytest-approvaltests
Successfully installed pytest-approvaltests-0.1.0

Second try:

pip install pytest-approvaltests==0.1.1
ERROR: Could not find a version that satisfies the requirement pytest-approvaltests==0.1.1 (from versions: 0.1.0)
ERROR: No matching distribution found for pytest-approvaltests==0.1.1

Successful try:
pip install pytest-approvaltests==0.1.0