idna handling & TLSA/CAA support
This MR:
- Switch from encodings.idna to the 3rd party idna module (a dnspython dependancy). Should close #15 (closed) and #49 (closed)
- Add support for TLSA RR (closes #40 (closed))
- Add support for CAA RR (closes #44 (closed))
- Switch from http to https for some links in the HTML template
Edited by John Shaft