merge for update

doc/source/whatsnew/v1.0.0.rst

@@ -255,6 +255,70 @@ no longer return ``np.nan`` by default.
 
  pd.Categorical([1, 2, np.nan], ordered=True).min()
 
+.. _whatsnew_1000.api_breaking.deps:
+
+Increased minimum versions for dependencies
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Some minimum supported versions of dependencies were updated (:issue:`29723`).
+If installed, we now require:
+
++-----------------+-----------------+----------+
+| Package | Minimum Version | Required |
++=================+=================+==========+
+| numpy | 1.13.3 | X |
++-----------------+-----------------+----------+
+| pytz | 2015.4 | X |
++-----------------+-----------------+----------+
+| python-dateutil | 2.6.1 | X |
++-----------------+-----------------+----------+
+| bottleneck | 1.2.1 | |
++-----------------+-----------------+----------+
+| numexpr | 2.6.2 | |
++-----------------+-----------------+----------+
+| pytest (dev) | 4.0.2 | |
++-----------------+-----------------+----------+
+
+For `optional libraries <https://dev.pandas.io/docs/install.html#dependencies>`_ the general recommendation is to use the latest version.
+The following table lists the lowest version per library that is currently being tested throughout the development of pandas.
+Optional libraries below the lowest tested version may still work, but are not considered supported.
+
++-----------------+-----------------+
+| Package | Minimum Version |
++=================+=================+
+| beautifulsoup4 | 4.6.0 |
++-----------------+-----------------+
+| fastparquet | 0.3.2 |
++-----------------+-----------------+
+| gcsfs | 0.2.2 |
++-----------------+-----------------+
+| lxml | 3.8.0 |
++-----------------+-----------------+
+| matplotlib | 2.2.2 |
++-----------------+-----------------+
+| openpyxl | 2.4.8 |
++-----------------+-----------------+
+| pyarrow | 0.9.0 |
++-----------------+-----------------+
+| pymysql | 0.7.1 |
++-----------------+-----------------+
+| pytables | 3.4.2 |
++-----------------+-----------------+
+| scipy | 0.19.0 |
++-----------------+-----------------+
+| sqlalchemy | 1.1.4 |
++-----------------+-----------------+
+| xarray | 0.8.2 |
++-----------------+-----------------+
+| xlrd | 1.1.0 |
++-----------------+-----------------+
+| xlsxwriter | 0.9.8 |
++-----------------+-----------------+
+| xlwt | 1.2.0 |
++-----------------+-----------------+
+
+See :ref:`install.dependencies` and :ref:`install.optional_dependencies` for more.
+
 
 .. _whatsnew_1000.api.other: