Check-tls-certs

-------------------

* Drop support for Python < 3.6.
[fschulze]

* Fix setting hostname when using ``|``.
[fschulze]

* Set timeout on socket before wrapping it in the SSL Connection.
[fschulze]

* Allow overriding the threshold for expiration warnings with ``-e`` option.
[fschulze]

* Refactor exception handling. If more than half of the domains throw an
exception during fetch, an exit code of 6 is returned instead of 4.
[fschulze]

-------------------

* Support wildcard certificates.
[fschulze]

-------------------

* Validate the certificate chain.
[fschulze]

* Allow specifying a host used for the actual connection using ``|``.
[fschulze]

* Re-raise actual connection errors, so the exit code of the script indicates
a failure.
[fschulze]

------------------

* Re-release because of premature upload.
[fschulze]

------------------

* Add 5 second timeout and print more detailed error messages.
[fschulze]

* If a line ends in a ``/`` it is joined with the next line when reading
domains from a file.
[fschulze]

* Sort domain names in output.
[fschulze]

------------------

* Validate the certificate chain sent by the server.
[fschulze]