Added documentation for Bacon.retry
Merge pull request #435 from omahlama/bacon-retry-documentation

Added documentation for Bacon.retry
Fix Bacon.fromArray(...).toString() output
Merge pull request #436 from skozin/fix/from-array-to-string

Fix Bacon.fromArray(...).toString() output after subscription
test case for #436
release 0.7.23
update relnotes
remove unnecessary array cloning
Fix live examples link

Hotlinking to raw.github.com (or raw.githubusercontent.com) no longer
works in major browsers since they started [respecting Github's use of
the `X-Content-Type-Options: nosniff`](https://github.com/blog/1482-).

RawGit to the rescue.
Merge pull request #437 from evanrmurphy/fix-live-examples-link

Fix live examples link
add spec
Bacon.when: skip all Initial events except the first one; multiple Initial events can occur when there are several sync sources created from Properties
Bacon.sampledBy/sampleByAsArray: always result to an EventStream
Bacon.sampledBy/sampleByAsArray: allow empty list of samplers, resulting to an empty stream
Merge branch 'master' into feature/bacon-sampled-by