Moded UnixAPIClient into impl.
First includes (garbage-ish)
Completely revived UnixAPISocket. Now async functions are explicit.
Stabilized APIClient. Now using new interface of UnixAPISocket.
Created ClientDataSocket `look-alike` APIClient.
Now, creating UnixClientDataSocket correctly.
Created UnixClientDataSocket. Well, it is really simple now.
March snapshot.
Tried to make sort of useful API.