_builddirectory. This has tremendous gains, including:
wurst_run.args- the first providing build artifacts, and the second for passing arguments to the wurst compiler.
wurst.buildfile is that consistency is maintained from build to build - dependencies are segregated, and maintaining library code can be more modular and convenient.
wurst.buildfile, thus updating the project's dependencies to keep the standard library and other used packages up-to-date.