Instead of Radium's DOM-based prefixer, which does not work on the server, we should use inline-style-prefixer, which does prefixing based on user agent (using the same data as autoprefixer). This library will make prefixes rendered on the server identical to those on the client, as long as the user agent is the same.

I'm working with @rofrischmann to clean up the API and reduce the size of the library, but as it stands it will not add too much bulk to Radium, maybe 1k or 2k more.

This will solve a number of issues: #201, #301, #311, #328, #342, #350, #351.