Stable commit for #1 #3 #4 #5

[ninjatrench]

There is another pull repository in which I have done fix for #3 and #5 it is in another branch specially for this two https://github.com/ninjatrench/github-icalendar/tree/ninjatrench-patch-3+5

I am requesting pull request for main branch where I have added Following

Using Class structure to build response for flask. Added OOP concept Added Category Option #5 Added Option to exclude private repo #4 Showing True email address #3 Caching of true email against username #1