Scikit-digital-health

- Pipeline saved files now have the extension .skdh
- Pipeline.load() can now accept a JSON string as input for pipeline creation
- Pipeline.load() now allows different errors to be raised or left as warnings
- For calculating time in bouts during activity level detection, if the number of samples is less than the bout length, a time of 0 is returned
- During acceleration orientation correction for gait, if angle values are outside the possible range (ie -1 to 1), no correction is performed (this scenario is only likely when gait is not present, or the accelerometer is too skewed for correction)

Changes
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- Gait analysis should now properly not calculate endpoints where there are not enough steps following the current step

Changes
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- Adding a process to a pipeline now creates a copy of that process by default.
- Added turn identification to the gait process. Currently only notes if a step occurs during a turn.

Changes:
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- Add error raising for size zero inputs to feature extensions
- Add catching for size zero inputs to gait features

Major Changes
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- Ensure FC and FC opp foot are unique
- Add IC timestamp to gait results for each step

Changes:

Added sleep classification tests
Added flag for application of Webster's sleep rescoring rules, True by default
Updates for copyright statements
Updates to documentation pages
Warnings on ActiGraph reader about being provided AS-IS