Merge pull request #2382 from willend/main

Repair Qt message box - we should now be on PyQt6 everywhere

Merge pull request #2381 from willend/main

Changed (hard-coded) mcgui 3D visualiser to be webgl-classic

Merge pull request #2376 from willend/main

Prototype solution to allow 'append’ mode for datasets

Merge pull request #2311 from willend/main

Attempt at fixing #2310

Merge pull request #2304 from willend/Make-backprop-thread-safe

Make backprop thread safe in McStas

Merge pull request #2300 from willend/main

Fix to MPI-mode use of Brilliance Transfer calculation.

Merge pull request #2286 from willend/main

Update CHANGES files

Merge pull request #2281 from willend/main

Allow mcrun / mcdisplay to run / visualize without access to .c/.instr

Merge pull request #2280 from mccode-dev/fix-issue-2279

Fix indentation bug - issue #2279

Merge pull request #2278 from mccode-dev/mcplot-1d-plot-from-0

Add mcplot toggle to "plot 1D-curves from 0-value" in linear mode