add gemspec and use it in Gemfile
use Date.parse on non-jruby

Yes it's really slow, but slow is better than nothing.
First stab at logstash-event gemspec
- Add key-value filter
note kv filter
- add 'dots' output for stdout, this emits one dot per event and lets
  you use 'pv' to track throughput.
- Add lumberjack input support (https://github.com/jordansissel/lumberjack)
  The initial implementation is quite poorly done, but exists to be
  functional and not necessarily fast. I can get 30K events/sec through
  it, though :)
Update changelog
Obey '#output?' method (LOGSTASH-537)
- Add test to cover pull #175 / LOGSTASH-528
DO NOT FEAR
Do remove last in mutate to help cover cases where we rename/replace/etc a field and want to remove the origin of that data (LOGSTASH-543)
Add window size support
- Add SSL support now that lumberjack requires it.
- Generate sincedb path name based on the 'path' attribute. THis helps
  work around two file inputs using the same sincedb path by default.
  LOGSTASH-554
- set sincedb path properly (prior didn't have .sincedb)
- migrate old ~/.sincedb if it exists, to the new name
Merge pull request #183 from logstash/issue/554

Generate sincedb path name based on the 'path' attribute.
Note sincedb default fix oon file input
- fix uppercase/lowercase bug where arrays would not be considered
  (common when you use grok).
- Add tests to ensure coverage of both string and array-of-string cases.
update changelog for mutate filter fix