Zeekscript

* Make the pylint tests optional (Christian Kreibich, Corelight)

* Support flushing the OutputStream on close, and do so when formatting (Christian Kreibich, Corelight)

* Strip trailing whitespace properly (Christian Kreibich, Corelight)

* Add intentional trailing whitespace to formatting test file (Christian Kreibich, Corelight)

* Modernize pyproject.toml (Christian Kreibich, Corelight)

* Update README to reflect recent functionality (Christian Kreibich, Corelight)

* This is 1.1.0. (Christian Kreibich, Corelight)

* Address some pylint warnings (Christian Kreibich, Corelight)

* Support recursive descent on directories when formatting scripts (Christian Kreibich, Corelight)