Merge pull request #32 from 1manprojects/Omm_support

added support for omm

Update dotnetcore.yml

updated dependcies for .net5 and .net6

Merge branch 'master' of github.com:1manprojects/one_Sgp4

bumped Version

updated project settings

updated build file

Udated Readme

updated gitignore file

fixed error in Date Calculation