v0.0.44: Hook-based DNS challenge support. Bugfixes.
The FDB package now hides hidden files (files starting with '.'). This increases the resiliency of the storage module in the face of files like .DS_Store. Previously the creation of these files in the state directory could result in fatal errors. More loading errors in storage are now nonfatal. More tests have been added. A distinction is now drawn between integration and unit tests. Hook-based DNS challenge support is now available.