v0.96.6

Oceananigans v0.96.6

Diff since v0.96.5

Merged pull requests:

• Export spacings operators near where they are defined (#4280) (@glwagner)
• Reinstate sharding tests (#4281) (@simone-silvestri)
• Fixes for running on TPUs... (#4289) (@glwagner)
• Convert EOS and fix tests (#4290) (@simone-silvestri)
• Fix bug in z-sharding for latitude-longitude grid (#4294) (@simone-silvestri)
• Bump to 0.96.6 (#4296) (@glwagner)

Closed issues:

• Reduction of Reduction (#4279)
• How can I use Field as input in UniformStokesDrift? (#4291)