Adjustments to IterationUpdate + printing

To correctly show Ng acceleration (which can now run for a subset of the atoms), IterationUpdate must now contain a list of whether each element underwent Ng acceleration.
Also corrects numpy lower bound which broke people's existing environment forcing an unnecessary update to 2.0

Build fixes

No changes to codebase since v0.12.0, but should fix macos builds.

Maintainance + Ng Updates

Updates due to Ng acceleration update. Now has upper and lower threshold within which to apply acceleration.
Also updating package pins and removing py38 support.

Testing

v0.11.4

Upload gha artifact steps to use v4

Bugfixes

• Fix for LTE populations when Debye shielding is disabled
• Fix for typo in ABO (Barklem) broadening for lines on neutral atoms.

Tweaks

• Added check to prevent axes from being put into the atmosphere inverted
• Only add continuum edpe point for an explicit continuum if the final grid point is more than 0.01 nm shorter

CRTAF Updates

Fixes for upcoming CRTAF standardisation, and key changes.

CRTAF Integration

Addition of a crtaf module to handle integration with the forthcoming CRTAF standard.

Bugfix for MSVC AVX2FMA compile

Bitwise operations no longer supported directly by MSVC, switching to intrinsic based forms.

Support for PRD Transitions on detailed static atoms

Detailed static atoms with fixed populations can now have the PRD emission coefficient rho evaluated. This is enabled by default, but can be disabled by setting detailedAtomPrd=False in the Context constructor.