I2mc

Updating release workflow (no relevant change for user from v2.2.3)

Fixed limits of yaxis for plots of the vertical eye signal in I2MC.plot.plot()

added support for numpy 1.24 and above

I2MC.plot now works with data for only a single eye

- `endT` and `dur` fields of fixation output are now consistent
- plot submodule no longer needs to be imported separately
- some enhancements to plot function:
- can now set a different unit for the axis label
- doesn't assume time starts at 0
- can now set x and y signals min and max instead of only max