added gait_landmarks_from_accel()
Update gait.py
Update gait.py
Update gait.py
added accelerometer version of gait functions
Merge branch 'master' into accel

Conflicts:
	gaitanalysis/gait.py
	gaitanalysis/motek.py
Update gait.py
Update motek.py
Update motek.py

removed old delsys time shift method
updating
Merge remote-tracking branch 'origin' into accel
Merge branch 'accel' of https://github.com/csu-hmc/Gait-Analysis-Toolkit into accel
function use the dataframe index as time column
Addition of delsys time shift test function

Merge remote-tracking branch 'origin/master' into accel

Conflicts:
	gaitanalysis/test/test_motek.py
Fixed failing tests
All test passing
All test pass. Ready to merge to main.
Updated a few docstrings.
Fixed use of relabel_analog_columns in clean_data
Removed additions to strikes/toeoff times.
Fixed test_grf_landmarks to check min and max times