Joining nearby NAMs for combined score

[ksahlin]

The idea of joining nearby NAMs for increased score/power and to reduce redundant alignments seem logical. However, it hasn’t worked as effectively as expected. I found one reason, that I describe in this comment: https://github.com/ksahlin/strobealign/commit/3d9632189c483be06b00eb421728f0d61f9e6920#commitcomment-140411641

Even after fixing as above, the idea is still not giving a great benefit on a smaller benchmark, but there could be remaining issues with the logic, or the testing I did is not representative of what happens on the main branch implementation (described in comment).