I was accepted into Google Summer of Code 2013 and will be working with the Inkscape project. My project involves two phases: first refactoring Inkscape’s existing unit handling support into one place, then extending said unit support to properly support real world units such as millimeters. More details are in the full project proposal. I plan to document my progress here and post summaries to the inkscape-devel mailing list. I have created a public repository for the first phase of the project. Once the first phase is completed, the branch will be merged back into the trunk, and a new branch will be created for the second phase.