kmer_gen : Generate kmers out of a string, skipping bad bases and bases with low qv
bloom-filter-tool : trim reads in one read set based on kmers not appearing in another read set
bithacks : currently just bit count
set-bit-count : count bits set to 1
bitwise-or : compute bitwise OR of 2 files
test varying number of threads
FIX : do not assume rvalue optimization, avoid 2x memory consumption
test-ixstream.cpp : basic tests