Version 1.0.0rc1 version bump and changelog update

Full tinydns spec-compliant source implementation

Correctly handle trailing . in TinyDNS source fqdns

Update CI python versions, remove 3.7

Add a message to script/release about pypirc when absent

Update azure's status flag info in dynamic_records.md

Per https://github.com/octodns/octodns-azure/pull/60

Always add ownership flagging records with lenient=True

Add zone name to TooMuchChange during plan

Make the in-repo __VERSION__ match what the most recent release used

This is intened to address cases where NS delegation ownership records
are added to the parent zone when they technically should live in the
delegated child. They're only used as ~metadata so this is fine, so long
as the provider supports it.

Pass lenient through to arpa processor