[Proj] updated epsg file in proj distribution

[Vincent J. Troisi]

I have imagery in a polar stereographic projection. However,
the latitude of the standard parallel is 71 degrees. I noticed
code 3031 in the current epsg database defines this projection,
but the code does not exist in the current proj releases. Are
there any plans to update the epsg file in the proj release to
the latest version of the epsg database?

Vince