Add more options to buffering
Refactor styled buffering to work with geos < 3.2
Add more detailed description about styled buffering
Add short example for style buffering
Change parameter type of buffer for consistency with parellel_offset
Update manual for styled buffering
Added LinearRing import statements

Added LinearRing and asLinearRing to import statements in order to make
loads(wkt) work for LinearRings.
Note that GEOS development headers are also required for speedups.
Merge pull request #58 from maarten-vermeyen/loads_linear_ring

Added LinearRing import statements
Merge pull request #61 from JasonSanford/speedups-docs

Note that GEOS development headers are also required for speedups.
Implement set operators for base geometry
Tests for operators
Fix operator test
Merge pull request #62 from kjordahl/master

Implement operators analagous to uses by builtin set type
Add polygonize_full function to shapely.ops.

Thanks to Sandro Santilli for reminding me how pointers to pointers
work.
Merge branch 'master' of github.com:Toblerity/Shapely
Updates to manual and change log for 1.2.18.
Add enum style classes for cap and join styles
Add missing cap and join style imports
Use join style class for parallel_offset operation