Added decorators for optional dependencies
Skip over more tests with optional dependencies
Add decorators in glue.qt.widgets.tests
Final changes related to skipping tests with optional dependencies
Added —no-optional-skip option for pytest
Add minimal configuration to Travis
Improve dependencies section of docs
Added back parametrization
Fix syntax in IPYTHON_GT_011_INSTALLED
Added missing astropy import
Fix syntax
Re-enable tests since percentile calculation is done with Numpy now
Avoid duplicated code in helpers
Removed two more instances of requires_scipy
Tweak pandas parsing logic to fix failing tests
Merge pull request #4 from ChrisBeaumont/minimal-tests

Tweak pandas parsing logic to fix failing tests
Merge pull request #467 from astrofrog/minimal-tests

Ensure that tests pass or skip with minimal dependencies