update links
add histo/barcharts, secondary example
Added geolocation chapter
Refactored nested and parent-child into their own chapters
Changed geo_bounding_box to use top_left/bottom_right
Fixed missing callout
add timeseries graphs
initial dump of cluster admin chapter
wrap up node stats
other stats
add cat api
Reworked the aggs practical considerations chapter
Removed the "parent" agg
Made geo into its own part, and removed percolation
Fixed a bad link
Removed non-prose chapter
Added fuzzy matching chapter
Fixed some docbook output
Removed references to other metadata fields
Add "in-memory" clarification to fielddata mention