Method definition for gsw_z_from_p is too strict

[haakon-e]

According to the TEOS-10 documentation for gsw_z_from_p [link], geo_strf_dyn_height, sea_surface_geopotential should be optional arguments, but in this package, they are mandatory.

GibbsSeaWater.jl/src/gen_gswteos10.jl

Lines 733 to 735 in fe9a7cd

	function gsw_z_from_p(p, lat, geo_strf_dyn_height, sea_surface_geopotential)
	ccall((:gsw_z_from_p, libgswteos), Cdouble, (Cdouble, Cdouble, Cdouble, Cdouble), p, lat, geo_strf_dyn_height, sea_surface_geopotential)
	end

[b-r-hamilton]

I believe I was able to fix this by adding the function definition on a local version of GibbsSeaWater.jl
function gsw_z_from_p(p, lat) ccall((:gsw_z_from_p, libgswteos), Cdouble, (Cdouble, Cdouble), p, lat) end
in the gen_gswteos10.jl file. Not sure if there is some issue with this solution, but happy to create a pull request if it would be useful.

[kouketsu]

Thanks for your suggestion @haakon-e.
Thanks for your comment @b-r-hamilton.
Actually, I plan to update them together with binary upgrades (but BinaryBuilding system is down now, please wait).