Efficient in-place table subsetting

Closes #2666

Author: jeromekelleher

c/CHANGELOG.rst

@@ -1,5 +1,5 @@
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-[1.1.2] - 2022-XX-XX
+[1.1.2] - 2023-XX-XX
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 **Features**
@@ -21,6 +21,9 @@
 - Guarantee that unfiltered tables are not written to unnecessarily
   during simplify (:user:`jeromekelleher` :pr:`2619`).
 
+- Add `x_table_keep_rows` methods to provide efficient in-place table subsetting
+  (:user:`jeromekelleher`, :pr:`2700`).
+
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 [1.1.1] - 2022-07-29
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