navigating to a different buffer outside of BufSurf

[damnskippy]

Just noticed that if you naviagate/load a buffer through vim (alternate-file, :b <buffer #>, etc) i.e. any other way natively in vim and not using BufSurf commands, that then continues to populate the BufSurf history.. which was surprising to me because I didn't expect the list to never be more than the number of buffers loaded. Maybe this behavior is what you intended, and if so, feel free to close this out. Otherwise, it would be nice if code considered this case as well and adjust the history accordingly. Thanks.