Add zip combinator with tests
Fixing failing tests
Updates from comments
Update documentation
Removing handling of properties
release 0.2.7
Merge branch 'feature-zip-combinator' of https://github.com/philipnilsson/bacon.js into zip
Finalize the zip family of methods.

- Add tests
- Fix test reliability (no simultaneous events)
- Refactor the API for better consistency with existing APIs
build js
release 0.2.8
change combineWith behavior
remove combineAll which had a confusing name
Support constants instead of Observables as arguments of combineAsArray, combineWith
update relnotes
release 0.3.0
Remove whitespace from ends of lines
Smarten up `fromNodeCallback` (see description)

Passing values from other streams into `fromCallback` and
`fromNodeCallback` is pretty cumbersome. This patch hacks
`fromNodeCallback` so that it can take any number of primitive values
and `Observable`s (`EventStream` and `Property` objects, for instance).
It will call its callback once it has all the values from all the
sources.
Simplify, also wrap `fromCallback`
Further simplify. Gotta find a better name for the wrapper.