Use --dep-libs instead of listing (some) of the dependencies manually
Merge pull request #16 from tomhughes/libs

Use --dep-libs instead of listing (some) of the dependencies manually
optimize and simplify spherical math
amend #16 by switching order of flags so --ldflags comes before --dep-libs
bump version to 0.1.0 with spherical projection api change
update changelog for v0.1.0
bump to v0.2.0 - now filtering features by bbox and attributes by name
Add issue #3 to changelog
bump to v0.2.1 with attribute validation removed
bump to v0.2.2 with minor fix for collecting feature bounding box