Evaluation results for the static analysis of each project and its source code.

We report the version control and issue tracking systems as well as the total number, attention rate and average response time for all open and closed issues and pull requests (PRs). Next, we analyze the existence of a test suite and report the resulting code coverage for most projects. Code complexity is only reported for projects written in Python since other languages do not allow for fast retrieval of this metric. Data obtained in August 2018.