A calendar item defines a period of time as it might apply to an event or interval in the past or future. A small language makes for concise representation of periods of varying precision. Multiple definitions are allowed and can be expressed relative to each other.
See About Calendar Plugin for how-to documentation about this plugin.
See About Plugins for general information about plugins.
Most of the calculation machinery can be tested in node.js at build time.
grunt build
to compile coffeescript and run non-ui tests.
grunt watch
to build on updates to plugin or tests.