less: clean up unnecessary diff line-no styling - less spacing still leave room to show the comment bubble with hiding the line number - looks good w/o letter-spacing - bootstrap already sets box-sizing: border-box; - it is a <a> no need for cursor: pointer - width: 100% makes no difference

# requirements.txt file for use as "pip install -r requirements.txt" as a
# readthedocs compatible alternative to "pip install -e ." which is a working
# alternative to "setup.py develop" which doesn't work with Mercurial 3.7
.