Release for 0.3.8

[drowenhorst-nrl]

Added

• Ability to add micron bars to IPF and scalar values maps. Use the addmicronbar keyword
  to makeipf and scalarimage functions.
• When using ebsd_index function, if the machine has multiple GPUs, the desired GPU
  can be chosen using the gpu_id keyword.
• When making IPF maps, a grayscale mix can be added using graychannel keyword.
• New pattern quality parameter, iq which is the mean intensity of the convolved peaks
  divided by the mean intensity of the radon. Typical values are 1.8--2.0
• Initial support for Thermo-Fisher .pat files.

Changed

• Minimum official support is now python 3.9
• pyebsdinex[parallel] now uses a minimum Ray v2.9
• oh5 files are currently written with OIM 8.6.
  OIM 9.1 oh5 files can be specified using version=9.1
• The fit value now is the unweighted mean angular deviation. Previously this was
  the weighted eigen value from the QUEST algorithm.
• Automatic CPU scheduling is changed for distributed indexing, avoiding spinning up many
  processes on large workstations.

Fixed

• ebsd_index_distributed should have better scheduling for multiple NVIDIA GPUs.
• Removed warnings around OpenCL builds
• Removed warnings with ray distributed NLPAR and indexing.