provide option to exclude private repositories

[dpocock]

If people are making their iCalendar feed available without authentication, they may not want to expose issues from their private repositories.

Provide a config option to exclude private repositories.

[ninjatrench]

There are two ways by which we fetch the data,

1. by repository name which user specifies in config file, in this case we can check if the given repository is private or not by github api.
2. by fetching all issues of current user, In this case how can we know if a particular issue belongs to private repository or not ? as per documentation they dont provide any such info in response https://developer.github.com/v3/issues/

How do you look at this problem ?