message: Renamed contains_trace add path list
  Renamed to make more explicit the functionality, also added a function to get a vector of the paths in the map for reporting purposes.
diff: @@ -84,7 +84,7 @@ impl<'a> TraceMap<'a> {
  None
  }
  - pub fn contains_trace(&self, file: &Path, line: u64) -> bool {
  + pub fn contains_location(&self, file: &Path, line: u64) -> bool {
  match self.traces.get(file) {
  Some(traces) => traces.iter().any(|x| x.line == line),
  None => false,
  @@ -109,4 +109,8 @@ impl<'a> TraceMap<'a> {
  self.traces.values_mut().flat_map(|x| x.iter_mut()).collect()
  }
  + pub fn get_files(&self) -> Vec<&PathBuf> {
  + self.traces.keys().collect()
  + }
  +
  }
  