Easyeeg

- (todo) Make the `extract` more flexible
- (todo) Integrate figures with labels into one
- (todo) classification across timepints and across trials
- (todo) roll_on_level on time and time_group

- Changed the Y-axis title to `power` for `Spectrum`
- Changed the printing format of `AnalyzeData`

- Fixed a issuein `multiple_comparison_correction`
- Fixed a issue of loading `AnalyzeData`

- Removed `collection` from the hierarchical Extracted_epochs. Now there are only`case` and `batch`
- New method `subtract(raw, between, align)`
- Fixed an issue of trial number when read more than one files of one subject.
- Changed `two_sample` test hypothesis from 'two-sides' to 'greater' in `classification`
- Added parameter `samplerate` in `load_raw_eeg`
- Set default values for parameter `plot_params` and `ax` in `plot_waveform`, `plot_spectrum`, `plot_heatmap`, and `plot_topograph`
- Supported to output the scores of different subjects in `classification` and `tanova`
- Changed the `smooth` to `cluster` in `multiple_comparison_correction`

- Now the AnalyzeData has the __repr__ method
- Fixed a issue of TANOVA plot
- Fixed a issue of saving AnalyzeData
- Renamed the method `RMS` to `GFP`

- Renamed the parameter `mode` to `strategy` in the method `TANOVA`