[
    {"version": "ott2.8", "date": "2014-06-11"},
    {"version": "ott2.7", "date": "2014-05-08"},
    {"version": "ott2.6", "date": "2014-04-11"},
    {"version": "ott2.5", "date": "2014-03-28"},
    {"version": "ott2.4", "date": "2014-03-17"}
    {"version": "ott2.3", "date": "2013-12-04"}
]

Add initial OT Taxonomy versions list.
Add initial OT Taxonomy versions list.

N.B. This will likely be superseded by a more comprehensive taxonomy report,
as described here:
https://github.com/OpenTreeOfLife/germinator/wiki/Overview-of-repository-statistics#fields-for-taxonomy-reports-work-in-progress

Addresses https://github.com/OpenTreeOfLife/opentree/issues/615.
