Updated changes.txt.
Use splash and logo images from the brand repo, see https://github.com/phetsims/joist/issues/120
Added 'brand' to phetLibs in package.json see https://github.com/phetsims/joist/issues/120
Fixed an issue where the faucets could get stuck open, see #53.  This also addresses some assertions that were occurring, see #54.
Merge branch 'master' into 1.0

Conflicts:
	changes.txt
	package.json
Updated, since some things appear to have gotten lost in the merge with the 1.0 branch.