[yt-dev] Issue #1255: Do not let yt-fido make more than two comments on a given PR (yt_analysis/yt)

New issue 1255: Do not let yt-fido make more than two comments on a given PR https://bitbucket.org/yt_analysis/yt/issues/1255/do-not-let-yt-fido-make-mor... Kacper Kowalik: If a comment already exists, replace it instead of creating a new one. Responsible: xarthisius