v0.9.3

SurfaceFluxes v0.9.3

Diff since v0.9.2

Merged pull requests:

• Remove unnecessary typecasts and add promotion to support Dual numbers (#157) (@dennisYatunin)
• Use global index to fix GPU output (#161) (@charleskawczynski)

Closed issues:

• GPU tests do not populate the output correctly. (#142)
• Revert 5057b32 (#144)