Remove same-thread checks when recycling (see #5254).
Prevent page-tracking checks from spreading across tests.
Reuse pages more agressively in BigArrays.

Pages are now going to be reused when the size of the array is greater than
${page_size}/2 (as opposed to ${page_size} currently).

Close #5299
fix incorrect array search in test (by sorting it first)

relates to #5621
fix typo causing incorrect plugin properties lookup in jars

relates #5261
[TEST] added support for replacing stashed values within objects and lists in our REST tests
[DOCS] Better document the limitation of nested objects.
Percentiles aggregation.

A new metric aggregation that can compute approximate values of arbitrary
percentiles.

Close #5323
Fix test bug: a too low compression level can make accuracy terrible.
[DOCS] Java API JSON typo