Meggie

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- Add missing h5py dependency

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- Fix spectrums and actions for old experiments
- Add descriptions to logged actions

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- Update setup.py for pypi

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- Switch to pipelines and actions architecture
- Replace message logging with more structured actions logging
- Add three basic pipelines for evokeds, spectrums and TFR's
- Make it possible to easily extend pipelines from plugins
- Add dialog for explicitly enabling or disabling installed plugins
- Improve exception handling to avoid crashing
- Add more throbbers to UI

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- Add simple reusable dialog

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- Make mne==0.23.0 compatible
- Add permutation tests
- Clean codebase for better reuse
- Add docstrings and autogenerate documentation using sphinx
- Include mne.Info to spectrum objects.
- Fix non-fif reading.
- Add utility for generating multi-subject experiments from sample_audvis_raw
- Update messaging
- Move source analysis out to external plugin.