Add changelog entries for three unadvertised fixes

The array-splicing fix goes first: it is a memory-corruption fix, and it is
the strongest illustration of why the ownership model is worth having,
since it is exactly the failure the model makes unrepresentable.

Also the uninitialized read when a filter emitted "properties": null, and
the evaluator.hpp include guard that defined EVALUATOR HPP and so never
guarded anything.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017KNxyHKasyWrWcvre2yK4r

CHANGELOG.md

@@ -1,5 +1,12 @@
 # 2.82.0
 
+* Fix corruption of a JSON array when a non-final element was removed from it.
+  The old `json_free` / `json_disconnect` passed an element count to `memmove`
+  where a byte count was required, so pruning element 0 of an 8-element array
+  left the first two slots pointing at the same node -- a double free at
+  teardown -- and silently dropped the last element. Only reachable through a
+  whole-document tree, because removing the most recently added element made
+  the bad `memmove` a zero-length no-op. (#388)
 * Rewrite `jsonpull` in C++ with `unique_ptr` ownership, `std::vector` for
   arrays and hash entries, and `std::string` for string values, replacing the
   hand-rolled `malloc`/`realloc`/`free` memory management. Value payloads now
@@ -18,6 +25,12 @@
 * Fix `tippecanoe-decode` and tile-join crashing on a directory tileset whose
   `metadata.json` holds a non-string value, such as a numeric `minzoom` or a
   nested object. Those entries are now reported and skipped. (#388)
+* Fix an uninitialized read when a prefilter or postfilter emitted a feature
+  with `"properties": null`. Both filter readers accepted a null `properties`
+  and then read its length as though it were a hash, which was never
+  initialized for a non-container node. (#388)
+* Fix the include guard in `evaluator.hpp`, which defined `EVALUATOR HPP`
+  instead of `EVALUATOR_HPP` and so never guarded anything. (#388)
 
 # 2.81.0