BUG: Series.map fails when mapping a dict with tuple keys

Explicitly use keys as index to prevent conversion to MultiIndex

Add test for mapping with tuple-keyed dict

Specify expected output for the test and use assert_series_equal

Add note to v0.14.1 release notes
BUG: Revisit Index.delete preserves freq
Merge pull request #7320 from sinhrks/delete

BUG: Revisit Index.delete preserves freq
Merge branch 'tuple-fix' of https://github.com/onesandzeroes/pandas into onesandzeroes-tuple-fix

Conflicts:
	doc/source/v0.14.1.txt
BUG: fix read_sql delegation for queries without select statement (GH7324)

The select check was introduced for mysql legacy compatibility, but introduced problem if the query did not contain a select statement (eg a stored procedure)
Merge pull request #7326 from jorisvandenbossche/sql-delegation

BUG: fix read_sql delegation for queries without select statement (GH7324)