Initial entry of manually-edited synth history.
Initial entry of manually-edited synth history.

N.B. This is a compromise intended to place "official" synthesis
releases on the timeline, even though we don't have proper statistics
for most of these dates. Also I'll need to remove the comments here
before this will parse properly.

OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree,OpenTreeOfLife/opentree