v0.13.1

Merge pull request #705 from rhattersley/prep-0.13.1

Bump version for v0.13.1

v0.13.0

v0.13.0 version string

v0.12.0

Merge pull request #605 from marqh/rel0.12

version

v0.11.2

• Fixed the URL for Natural Earth downloads.
• Updated the INSTALL file to better reflect some dependencies.

v0.11.1

Merge pull request #453 from rhattersley/update-freetype

Update tests to work with recent freetype 2.4.