BUG: Fix conditional for underlying price in io.data.options.

Refactor and regression test.
DOC: table keyword missing in the docstring for Series.plot() and DataFrame.plot()
Merge branch 'master' of https://github.com/dstephens99/pandas into dstephens99-master
Merge pull request #7698 from mortada/df_table

DOC: table keyword missing in the docstring for Series.plot() and DataFr...
DOC: fix non-ascii character (from #7698)
DOC: add release thanks note
BUG: offset normalize option may not work in addition/subtraction
Merge pull request #7705 from sinhrks/normalize_bug

BUG: offset normalize option may not work in addition/subtraction
DOC: fix doc build warnings

- indentation error in the option docstring
- link to options page that has moved
- select_dtypes docstring
TST: additional network error catching (test_html/test_spam_html)
Merge pull request #7713 from jorisvandenbossche/doc-fixes3

DOC: fix doc build warnings
DOC: fix problem with part of code example cut off

Probably a bug in the ipython directive, but for now just fixing by putting it in seperate code blocks (only the first def() rendered)
TST/REG/BUG: Make PeriodIndex work with Series objects
Merge pull request #7712 from cpcloud/period-index-constructor

BUG: PeriodIndex constructor doesn't work with Series objects
SQL: suppress warning for BIGINT with sqlite and sqlalchemy<0.8.2 (GH7433)
DOC: docstring for PeriodIndex
Merge pull request #7721 from cpcloud/period-index-docstring

DOC: docstring for PeriodIndex
CI: remove sql from 3.3 build entirely
Merge pull request #7719 from jorisvandenbossche/sql-bigint-sqlite-warning

SQL: suppress warning for BIGINT with sqlite and sqlalchemy<0.8.2 (GH7433)
DOC: clean up 0.14.1 whatsnew file