refactor: port to python for backend

experimental: rework UI

feat: allow fsaverage grid toggle
feat: allow feature download
maint: surface face selection disabled

maint: added text Centroid
feat: allow fsaverage grid to be toggled

v2.12.5

feat: enabled connectivity for jba3

feat: added version inspector in UI

v2.12.4

fix z plane traversal

feat: prepare for mebrains update

fix ng layer tune not applying color map correctly

fix: rgb color cm string

bugfix: show desc readmore uncollapse button
bugfix: region smart chip also fades unless on hover
refactor: bottom menu (atlas selector)
maint: re position of x/42 features
maint: changed reset btn (flat -> stroked)
bugfix: exmpt btn
bugfix: catch when voi is undefined
maint: remove unused css

feat: align jumbo chip icon to chip, not to line
feat: introduce opacity to jumbo chip

maint: update text when templ/parc not available

feat: added academic icon
feat: using doi icon
maint: Preview -> Visualization
maint: move desc to bottom of side nav

v2.12.3

maint: bump ng-layer-tune version

fix: min tray filtering

feat: desc and doi

fix: region selectable

fix: remove exmpt lbl on voi