Explain why re-signs make IXFRs big
IXFR-ONLY does not reduce the size of an IXFR
Typo
Clarify description of delete operations.

Say "the DXFR includes" rather than "is added" so that it is clear
where the record appears and to avoid cognitive dissonance between
delete and add.
SOA in query is not optional
clarify example zone
How to replace an RRset
Implicit RRSIG deletion applies to replacement as well
Be clear about placing records in the deletion or addition list
Merge pull request #2 from fanf2/fanf

Replace RRset syntax and editorial tweaks