v0.2.5

• Fix flexbox-related property value parsing (Mark Lee)
• Support simple blocks in functions (Douglas Christopher Wilson)
• Update package.json config (Nick Schonning)
• Ignore NPM debug logs (Nick Schonning)
• Update repo URL for Travis badge (Nick Schonning)
• Add support for the CSS3 sizing spec (Mark Lee)
• Parse quoted and unquoted uri @imports. Fixes #108 (Terin Stock)
• Allow @viewport to be inside of @media (Derk-Jan Hartman)
• Fix test task (Tunghsiao Liu)
• Update viewport unit (Tunghsiao Liu)
• Add support for animation-fill-mode (Michael Stämpfli)
• Allow underscores in identifiers (Michael Mattiacci)