Update to latest bugfix release in 1.5.x series.

1.5.17 (2016-08-31)

• Bug fix: eliminate memory leak in geom_factory() (#408).
• Bug fix: remove mention of negative distances in parallel_offset and note that vertices of right hand offset lines are reversed (#284).

1.5.16 (2016-05-26)

• Bug fix: eliminate memory leak when unpickling geometry objects (#384, #385).
• Bug fix: prevent crashes when attempting to pickle a prepared geometry, raising PicklingError instead (#386).
• Packaging: extension modules in the OS X wheels uploaded to PyPI link only libgeos_c.dylib now (you can verify and compare to previous releases with otool -L shapely/vectorized/_vectorized.so).

1.5.15 (2016-03-29)

• Bug fix: use uintptr_t to store pointers instead of long in _geos.pxi, preventing an overflow error (#372, #373). Note that this bug fix was erroneously reported to have been made in 1.5.14, but was not.

1.5.14 (2016-03-27)

• Bug fix: use type() instead of isinstance() when evaluating geometry equality, preventing instances of base and derived classes from being mistaken for equals (#317).
• Bug fix: ensure that empty geometries are created when constructors have no args (#332, #333).
• Bug fix: support app "freezing" better on Windows by not relying on the __file__ attribute (#342, #377).
• Bug fix: ensure that empty polygons evaluate to be == (#355).
• Bug fix: filter out empty geometries that can cause segfaults when creating and loading STRtrees (#345, #348).
• Bug fix: no longer attempt to reuse GEOS DLLs already loaded by Rasterio or Fiona on OS X (#374, #375).

1.5.13 (2015-10-09)

• Restore setup and runtime discovery and loading of GEOS shared library to state at version 1.5.9 (#326).
• On OS X we try to reuse any GEOS shared library that may have been loaded via import of Fiona or Rasterio in order to avoid a bug involving the GEOS AbstractSTRtree (#324, #327).

1.5.12 (2015-08-27)

• Remove configuration of root logger from libgeos.py (#312).
• Skip test_fallbacks on Windows (#308).
• Call setlocale(locale.LC_ALL, "") instead of resetlocale() on Windows when tearing down the locale test (#308).
• Fix for Sphinx warnings (#309).
• Addition of .cache, .idea, .pyd, .pdb to .gitignore (#310).

1.5.11 (2015-08-23)

• Remove packaging module requirement added in 1.5.10 (#305). Distutils can't parse versions using 'rc', but if we stick to 'a' and 'b' we will be fine.

1.5.10 (2015-08-22)

• Monkey patch affinity module by absolute reference (#299).
• Raise TopologicalError in relate() instead of crashing (#294, #295, #303).

1.5.9 (2015-05-27)

• Fix for 64 bit speedups compatibility (#274).

1.5.8 (2015-04-29)

• Setup file encoding bug fix (#254).
• Support for pyinstaller (#261).
• Major prepared geometry operation fix for Windows (#268, #269).
• Major fix for OS X binary wheel (#262).

1.5.7 (2015-03-16)

• Test and fix buggy error and notice handlers (#249).

1.5.6 (2015-02-02)

• Fix setup regression (#232, #234).
• SVG representation improvements (#233, #237).

1.5.5 (2015-01-20)

• MANIFEST changes to restore _geox.pxi (#231).

1.5.4 (2015-01-19)

• Fixed OS X binary wheel library load path (#224).

1.5.3 (2015-01-12)

• Fixed ownership and potential memory leak in polygonize (#223).
• Wider release of binary wheels for OS X.

Build HTML documentation and add a -doc subpackage.

Properly install license file.

Various packaging improvements, including the following (and others):

• De-conditionalize Python 3 support
• Switch to GitHub tarball
• Do not use unversioned python
• Use appropriate spec file macros
• Ensure Cython C sources are always regenerated
• Properly install _geos.pxi