Release 0.3.1

Lensfun 0.3.1 maintenance release is out with more than 60 new lens profiles and another 30 updated calibrations.

Other changes:

• Improved performance when used with 32-bit float image buffers
• Introduced automated testing
• lensfun-update-data now also works without root privileges
• Fixed autoscaling for panoramic and equirectangular projections

More details in the complete Changelog for 0.3.1.