`miniwdl configure`
This new subcommand walks through generating a runner configuration file with common opt-in features, like the call and download caches. It eases first-time setup, allowing further customization.
`miniwdl run`
* Improved macOS compatibility, though setup still has a few roadbumps (https://github.com/chanzuckerberg/miniwdl/issues/145)
* The runner "flocks" the top-level run directory, in addition to the log file therein, while the run is in progress.
* Recognize `runtime.container` as an alias for `runtime.docker`
* Adds plugin extensibility for call cache (yet to be documented)
`miniwdl check`
* Startup latency significantly improved (~50%)
`WDL`
* WDL `version 1.1` is now recognized, anticipating [its ratification in the OpenWDL community](https://github.com/openwdl/wdl/pull/428)
* Roughly, this includes all of miniwdl's existing `version development` features *except* `Directory` support
* Python scripts now must explicitly import the `WDL.runtime` and `WDL.Lint` subpackages in order to use their functionality, in addition to `import WDL` (for CLI startup latency improvement)
* `Float` coerces to `String` with six decimal places, per spec