#17400: correct handling of 100.64.0.0/10, fixing the docs and updating NEWS
Issue #19327: Fixed the working of regular expressions with too big charset.
Issue #19327: Fixed the working of regular expressions with too big charset.
Issue #19369: Optimized the usage of __length_hint__().
Close #19379: Lazily import linecache in the warnings module, to make startup with warnings faster until a warning gets printed.
Issue #19287: Fixed the "in" operator of dbm.ndbm databases for string
argument.  Original patch by Arfrever Frehtes Taifersar Arahesis.
Issue #19287: Fixed the "in" operator of dbm.ndbm databases for string
argument.  Original patch by Arfrever Frehtes Taifersar Arahesis.
Issue #19288: Fixed the "in" operator of dbm.gnu databases for string
argument.  Original patch by Arfrever Frehtes Taifersar Arahesis.
Issue #19288: Fixed the "in" operator of dbm.gnu databases for string
argument.  Original patch by Arfrever Frehtes Taifersar Arahesis.
remove unused imports from statistics module