Concatenate with scalar coordinate.
Review actions.
Review action, scalar terminology change.
Merge pull request #1273 from bjlittle/concatenate_scalar

Concatenate with scalar coordinate.
ENH: Optimisation of regrid.
Review actions
Update miniconda install
Merge pull request #1431 from cpelley/optim_regrid

ENH: Optimisation of regrid.
ENH: Cached cropped_bounds within regrid
Review changes