Remove unused functions from Hashtable: consume_high_abund_kmers, count_kmers_within_depth, find_radius_for_volume, count_kmers_on_radius, extract_unique_paths
Merge pull request #623 from brtaylor92/fix/599

Remove unused functions from Hashtable: consume_high_abund_kmers, count_...
link to stdc++ docs
Merge pull request #629 from ged-lab/doc-link

link to stdc++ docs