* Add Glob wrapper type with better serialization
* Introduce PathIgnoreRule struct
* Implement equality for Glob type
* Add PathIgnoreRule to InstanceContext
* Implement glob ignores in directory middleware
* Fix up filters
* Use Iterator::all instead of loop
* Add project-level configuration for glob ignores
* Add test project for glob ignores
* Wire up project file and snapshots to make glob ignores work
* Better codepaths for adding ignore rules with empty iterators
* Add test for globs inherited from parent projects
* Add test details, support glob ignores in nested projects
* Add feature flag for globs
* Switch to use ExactSizeIterator instead of size_hint
* Remove glob visitor
* Rewrite project file to have relative paths and drop SourceProject
* Redo project error types
* Tidy up and document Project type
* Strip out init command
