pubmedparser 2.1.0

Added

• Support for multi-threading using pthreads.
• Ability to interrupt.
• Workflow for building and publishing wheels.

Changed

• Move error handling to externally defined error handlers (i.e. so the python interface can define a python friendly error handler).

Fixed

• Protect against trying to delete non-existent md5 file.
• Allow the program to continue after a parse error by removing data stored from the malformed input file.
• Memory leaks using valgrind.
• Ensure the reprocess all flag works even if no files have been processed yet.