Support implicit command repetition

[pwesten]

Per the SVG 1.1 spec:

"The command letter can be eliminated on subsequent commands if the same command is used multiple times in a row (e.g., you can drop the second "L" in "M 100 200 L 200 100 L -100 -200" and use "M 100 200 L 200 100 -100 -200" instead)."

[mchoe]

This should work in the current implementation. See screenshot below.

Having said that, I will be releasing a brand new version very soon (within the week hopefully) which features a test-driven parser that supports more elements and attributes. You can preview that release on the feature/2.0.0 branch. It's still changing, so I wouldn't recommend using it in production yet, but I know for a fact that consecutive commands is fully supported.