Implement ellipsoidal formulation of +proj=ortho (fixes #397) #2361
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- Map ESRI 'Local' to +proj=ortho when Scale_Factor = 1 and Azimuth = 0 - Map ESRI 'Orthographic' to a PROJ WKT2 'Orthographic (Spherical)' which maps to +proj=ortho +f=0 to froce spherical evaluation
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…ghly improve initial guessing
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kbevers
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Sep 30, 2020
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which maps to +proj=ortho +f=0 to froce spherical evaluation