Galaxy: Add 'provides' option to tool configuration to allow a package to be linked in as provide package dependencies for other packages. Use this to specify that the transproteomics pipeline install also install proteowizard and XTandem.
Deployer: Allow datetime substitution for snapshot descriptions.
Deployer: Testing this, it may not make sense. Add ability to launch cloudman AMI without running cloudman, so it can be tweaked and repackaged.
Deployer: Add install_custom action and --package command-line argument (will also read from settings.yaml if command-line argument is unspecified.