BF: boost min cython to 0.23 (Closes pandas-dev#14699)

Author: yarikoptic

ci/install_travis.sh

@@ -107,7 +107,7 @@ if [ "$BUILD_TEST" ]; then
 
     # build testing
     pip uninstall --yes cython
-    pip install cython==0.19.1
+    pip install cython==0.23
     ( python setup.py build_ext --inplace && python setup.py develop ) || true
 
 else

ci/requirements-2.7.build

@@ -1,4 +1,4 @@
 python-dateutil=2.4.1
 pytz=2013b
 numpy
-cython=0.19.1
+cython=0.23

ci/requirements-2.7_COMPAT.build

@@ -1,4 +1,4 @@
 numpy=1.7.1
-cython=0.19.1
+cython=0.23
 dateutil=1.5
 pytz=2013b

ci/requirements-2.7_LOCALE.build

@@ -1,4 +1,4 @@
 python-dateutil
 pytz=2013b
 numpy=1.7.1
-cython=0.19.1
+cython=0.23

doc/source/install.rst

@@ -243,7 +243,7 @@ Optional Dependencies
 ~~~~~~~~~~~~~~~~~~~~~
 
 * `Cython <http://www.cython.org>`__: Only necessary to build development
-  version. Version 0.19.1 or higher.
+  version. Version 0.23 or higher.
 * `SciPy <http://www.scipy.org>`__: miscellaneous statistical functions
 * `xarray <http://xarray.pydata.org>`__: pandas like handling for > 2 dims, needed for converting Panels to xarray objects. Version 0.7.0 or higher is recommended.
 * `PyTables <http://www.pytables.org>`__: necessary for HDF5-based storage. Version 3.0.0 or higher required, Version 3.2.1 or higher highly recommended.

doc/source/whatsnew/v0.20.0.txt

@@ -108,3 +108,5 @@ Performance Improvements
 
 Bug Fixes
 ~~~~~~~~~
+
+- Require at least 0.23 version of cython to avoid problems with character encodings (:issue:`14699`)

setup.py

@@ -27,7 +27,7 @@ def is_platform_mac():
 import versioneer
 cmdclass = versioneer.get_cmdclass()
 
-min_cython_ver = '0.19.1'
+min_cython_ver = '0.23'
 try:
     import Cython
     ver = Cython.__version__