Changes for spf-check

All notable changes grouped by version.

[0.4.2] 2019-07-05

Returns PermError when TXT is not in US-ASCII.

[0.4.1] 2019-01-30

Match only IPs of the same kind.

[0.4.0] 2019-01-15

Publish NPM package.

[0.3.0] 2018-12-28

BC-BREAK Now DNS lookup limit is enforced as 10 maximum queries for mechanisms and 10 maximum queries for retrieving A record out of exchanges returned in the MX mechanism.
New option { maxDNS: 10 } to change the DNS lookup limit.
BC-BREAK Domain and sender parameters has been moved from SPF.check() to SPF.constructor(). Stable API has no change.

[0.2.0] 2018-12-25

BC-BREAK Now DNS queries will be performed at evaluation time. Previous checks that returned TempFail might now return another value on an early match. Old method can be re-activated with { prefetch: true } options.
Now SPFResult contains the last mechanism matched (useful for Received-SPF header field "mechanism") and a list of all matched mechanisms in case that at least one "include" mechanism was processed.

[0.1.0] 2018-12-24

Initial version.