Attempt to fix read-the-docs.
The errors appear to be related to pyparsing being newer than sphinx-doxylink (which has not been updated in years). Explicitly list the requirements file and force a contemporaneous version of pyparsing.
The errors appear to be related to pyparsing being newer than sphinx-doxylink (which has not been updated in years). Explicitly list the requirements file and force a contemporaneous version of pyparsing.