Merge pull request #243 from mileskin/master

Minor cleanup, saves a few bytes yay
Add sampledBy to EventStream
Add test for eventstream.sampledby
Replace raw.github.com by rawgithub.com in README

The reason are well explained in rawgithub.com, but basically github sends (on purpose) the wrong headers, so resources can be wrongly/not interpreted by browsers. I'm not affiliated with rawgithub.com (which is a free service anyway) and I know it could die anytime, but it's still better that the GH raw thing which is good for downloading only.
Remove raw.github.com link in README
Merge pull request #246 from DjebbZ/master

Remove raw.github.com in README
fix slidingWindow example in readme
update relnotes
release 0.6.14
add Property.startWith
update relnotes
release 0.6.15
Merge pull request #245 from philipnilsson/eventstream-has-sampledBy

Add sampledBy to EventStream
update relnotes
release 0.6.16
allow predicate function in endOnError
release 0.6.14
add docs for withHandler
release 0.6.17
update relnotes