* Skip compiler download if user has them already (Docker Windows)
* Use Expand-Archive instead of tar to extract zip on Windows
* Return to using latest wibo in Dockerfile
* Switch wibo to latest version in guide
also improve formatting a bit
* Skip compiler download if user has them already (Docker Mac/Linux)
* Slightly optimize error handling
* Make docker upgrade packages on build
* add compiler readmes to .gitignore
* add compiler folders to .gitignore
this is better than just the readmes just in case anything inside the zip changes in the future
* Fix newline
* Re-add command that was deleted by accident