Remove number of deprecated parameters/functions/classes [fix #6641]
DOC: add performance section to io.rst
DOC: v0.14.0 updates
DOC: add space considerations to IO methods in performance section
BUG: fix replace bug where different dtypes in a nested dict would only replace the first value
Merge branch 'fix6641_pr' of https://github.com/jsexauer/pandas into jsexauer-fix6641_pr

Conflicts:
	doc/source/v0.14.0.txt
Merge pull request #6820 from cpcloud/replace-dtype-bool-fix

BUG: fix replace bug where different dtypes in a nested dict would only replace the first value