watch: set OUTPUT_AUTOFLUSH, disabled buffering
domainkeys: fixed pod grammar error
SPF: add trans. note spf_pass_host if SPF=pass
SPF: add pod, documenting spf_pass_host note
tls: added ability to store certs in config/ssl

was hard coded to ./ssl
new plugin: dmarc
fix dmarc plugin tests
MANIFEST: bring up-to-date
added MYMETA.* to MANIFEST.SKIP

these are added new newer versions of ExtUtils::MakeMaker