dixon and registration fixes

bugfixes and cleanup of registration functions.
masking optimization
restructure of internal toolboox demo data and files
denoise updates
dixon updates

Dixon upgrade

Dixon reconstruction update and performance improvements

tractography and cleanup

Full Changelog: 2.8.1...2.9.3

Finally full tractography functionality is in the toolbox

update paclet

update dixon recon and added NN denoising

paclet loading

update to new packet format Mathematica 13+

still issues with documentation for release 13.0

tagging and recon

update to reconfiles and tagging tools

perfromance update

some small performance upgrades.

dixon bipolar

added fitting of bipolar dixon data and some small bug fixes

update functions documentation

Full Changelog: 2.5.0...2.6.0

12.3 PlotData optimization

performance increase of PlotData
fiber tractography
bugfix in Unwarp resulting in water fat swaps in dixon reconstruction.

rebuild of the documentation (online and building).

optimized initialization of the toolbox.

fixed .paclet installation file errors.