Log level parameter type for Click
copied from cf-post-staging / click-loglevelclick-loglevel provides a LogLevel parameter type for use in Click
programs that wish to let the user set the logging level. It accepts all
of the logging log level names (CRITICAL, ERROR, WARNING, INFO,
DEBUG, and NOTSET, all case insensitive), and converts them into their
corresponding numeric values. It also accepts integer values and leaves
them as-is. Custom log levels are also supported.
