BUG: do not remove temporaries from eval/query scope
Merge pull request #7303 from cpcloud/eval-local-string-fix-7300

BUG: do not remove temporaries from eval/query scope
BUG: allow dup indexing with Float64Index
Merge pull request #7149 from cpcloud/float64index-dup-fix-7143

BUG: allow dup indexing with Float64Index
CLN: move internal methods to DTIOpsMixin