With this new compare function the version strings seen in the output
get sorted properly. So something like "1.89.0" gets sorted before
"1.135.0", not after. It also makes the room versions count up properly
with the "unknown" version getting placed at the beginning.
Parallelizing the retrieval of the server version information decreases
the program runtime, especially since the impact of slow responses and
timeouts is lowered greatly.
Add first version of mrvc (max room version checker) - a tool for
determining how many members support which maximum room version for a
given Matrix room.
