OTT 2.4:
- Add Index Fungorum (generated by Peter M's script)
  . Fold sibling homonyms together to make single taxon (except not in silva)
  . Turn parent self-loops into roots
- Make prev_ott setup Makefile rule work
- Collect source metadata and dump in union taxonomy's about.json file
- Capture data of NCBI dump for provenance purposes
- Stitch taxonomies together properly under Silva
  . Add Chloroplastida as a synonym for Viridiplantae
  . Add 'division' taxa Fungi, Metazoa etc. as taxa in Silva
- Minor improvements to various reports to facilitate debugging
  . deprecation reports
  . homonym log messages
  . matrix message detail e.g. excluded / coexcluded additional info
  . replacement id for excluded nodes
- Kludge study 713 to force plants and bacteria to be disjoint
- Tease apart by-rank and by-name criteria for tie breaking
- Sort accession ids in silva for improved identifier stability
Improve smushing logic, now opt-in; internal improvements; sort Silva accession ids by length *then* alphabetically
New feature --sample to extract sampled trees
Catch-up with master
Changes for 2.4.draft2:
* Spelling variants file from Rick is now checked in
* GBIF source taxonomy list checked in
* Edits formerly in ott_edits.tsv have been moved out to misc_edits.tsv
* Synonyms file now has four columns; 'type' column is new
* Simplified the Makefile a bit
* Added rules to make short-list.tsv, the list of most serious deprecations
* New rule for aster-tarball
* New '--select2' directive improving on '--select' (will switch over
  to new name later)
* Pull some collection modifications out of loop to avoid concurrent
  modification exceptions
* Exclude 'in-part', 'includes', 'type material', and 'authority' type
  synonyms
* Improve name lookup logic in patch system to reduce number of
  ambiguities
* New "fold" command
* Fix patch for Berendtia
* Improve postmortem reports, e.g. for unresolved/ambiguous show the
  alternatives that were being considered
* 'eschew-tattered' rule discourages matching to tattered nodes
Catch-up with origin/master
Commit for 2.4.draft2; NEWS.md file with release notes; typo fix
Merge pull request #160 from OpenTreeOfLife/ott24

Index Fungorum, --sample and --select2, etc. - several commits