Integrate latest version of RoboSharp.

Currently, we're using an older version of the library, which is most likely also the problem in #11 (closed).

Update to the latest one from the RoboSharp repo.

See also #14 (closed).

mentioned in commit f195abec

added Doing and removed To Do labels

closed via commit d4937c81

mentioned in commit 3127d1ec

removed Doing label

mentioned in commit d4937c81