* 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
* Drop plugin context on the floor
* Remove redirect from old context to new context
* Pass InstanceContext via & instead of &mut reference
* Re-use context value in ChangeProcessor from metadata
This PR refactors all of the methods on `Vfs` from accepting `&mut self` to
accepting `&self` and keeping data wrapped in a mutex. This builds on previous
changes to make reference count file contents and cleans up the last places
where we're returning borrowed data out of the VFS interface.
Once this change lands, there are two possible directions we can go that I see:
* Conservative: Refactor all remaining `&mut Vfs` handles to `&Vfs`
* Interesting: Embrace ref counting by changing `Vfs` methods to accept `self:
Arc<Self>`, which makes the `VfsEntry` API no longer need an explicit `Vfs`
argument for its operations.
* Change VfsFetcher to be immutable with internal locking
* Refactor Vfs::would_be_resident
* Refactor Vfs::read_if_not_exists
* Refactor Vfs::raise_file_removed
* Refactor Vfs::raise_file_changed
* Add Vfs::get_internal as bits of Vfs::get
* Switch Vfs to use internal locking
* Migrate all Vfs methods from &mut self to &self
* Make VfsEntry access Vfs immutably
* Remove outer VFS locking (#260)
* Refactor all snapshot middleware to accept &Vfs instead of &mut Vfs
* Remove outer VFS Mutex across the board
Initialization logic needed for serve, build, and upload is now
much more clear than it was when these functions were written.
This commit refactors all of them to use a new common_setup
module for all of their initialization that's the same.
