Release 0.9.20

• Add --compile-commands flag to lobster-cpp. This allows to specify a path to the
  compile command database and is effectively a wrapper around the -p argument of
  clang tidy. See the official documentation of clang tidy for more details on this
  parameter.

• lobster-cpptest writes absolute paths into its *.lobster output files instead of
  paths relative to the current working directory.

• If a *.lobster file contains a tag more than once, then an error message
  ("duplicated definition") is printed for each consecutive entry with the same tag,
  instead of printing it just for the first entry.
  The following tools are affected:

  • lobster-codebeamer
  • lobster-report

• lobster-gtest accepts XML nodes other than testcase, but ignores them.