Support deep fields (foo.bar) in date filter (LOGSTASH-724)
Support deep fields (foo.bar) in date filter (LOGSTASH-724)
allow literal dot with \.
Merge branch 'master' into LOGSTASH-724
reverted silly gsub
Merge branch 'master' into LOGSTASH-724
Merge branch 'LOGSTASH-724' of https://github.com/semiosis/logstash into semiosis-LOGSTASH-724

Conflicts:
	lib/logstash/filters/date.rb
Merge branch 'semiosis-LOGSTASH-724'