Add libvisual-0.4-dev to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1936
Add libvisual-0.4-dev to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1936

Packages: libvisual-0.4-dev libvisual-0.4-0

travis-ci/apt-package-whitelist,travis-ci/apt-package-whitelist