Merge pull request Percona-Lab#44 from timvaillancourt/pep8_spelling_…

…and_surpress

Fixing spelling of "properties" and adding PEP8 broadexception override beca…

Merge pull request Percona-Lab#10 from timvaillancourt/tail_py_close_fix

Fixing error for 1 vs 3 args that signal() causes in Tail.py