Nionswift-usim

------------------
- Minor changes to be compatible with nionswift-instrumentation.
- Improve 'inform' functionality on Ronchigram controls.

------------------
- Fix some simulated aberration calculations.
- Add option for flake sample (same as previous version) or amorphous sample.
- Allow adding new controls to existing instrument instance.
- Add support for 2D controls and AxisManager.

------------------
- Ensure noise gets added as float32 to ensure good display performance.

------------------
- Fix scaling of spectra to be consistent with beam current, sample thickness, and energy offset.
- Improve performance for cameras.
- Add support for ZLP tare control / inform.
- Add controls used in 4D acquisition.
- Change Ronchigram units to radians.
- Improve/fix reliability with camera running faster than scan.

Contributors: Brow71189 cmeyer

------------------
- Fix issue with scan content position (introduced with rotated scans).

------------------
- Fix minor issue with EELS data.