Starts work on #55.
This is similar to the previous work in #125. It's gated behind a new Cargo
feature, `user-plugins`. This time, the config gate is much smaller. The
`plugins` member of projects is still accessible when plugins aren't enabled,
but is always empty. Additionally, user plugins are only enabled if there's a
Lua state present in the snapshot context when the `SnapshotUserPlugins`
snapshot middleware runs. This not ever the case currently.
This code has very little possibility of rotting while we focus on other work,
since it'll be guaranteed to still compile and can be tested in isolation
without the feature being turned on.
* A minimum viable product for init.meta.json
* Properties support
* Add ignoreUnknownChildren support
* Apply requested changes
* Use reflection guiding
* Add a script to the test
* Change to ignoreUnknownInstances
* Apply requested changes
* Add children sorting to snapshot_reconciler
* Update snapshot tests to include stable children order
* Bump dependencies, which should make this PR work
* Changes project-related structures to use `BTreeMap` instead of `HashMap` for children to aid determiniusm
* Changes imfs-related structures to have total ordering and use `BTreeSet` instead of `HashSet`
* Upgrades dependencies to `bx_dom_weak`1.2.0 and rbx_xml 0.5.0 to aid in more determinism stuff
* Re-exposes the `RbxSession`'s root project via `root_project()`
* Implements `Default` for a couple things
* Tweaks visualization code to support visualizing trees not attached to an `RbxSession`
* Adds an ID-invariant comparison method for `rbx_tree` relying on previous determinism changes
* Adds a (disabled) test to start finding issues in the reconciler with regards to communicativity of snapshot application
* Adds a snapshot testing system that operates on `RbxTree` and associated metadata, which are committed in this change
* Do the nested partition thing
* Tidy up touched code
* Add nested partition test project, not fully functional
* Clean up variable names, move path_metadata mutation strictly into snapshot_reconciler
* Remove path_metadata, snapshotting is now pure
* Factor out snapshot metadata storage to fix a missing case
* Pull instance_name out of per_path_metadata, closer to what we need
* Refactor to make metadata make more sense, part one
* All appears to be well
* Cull 'metadata_per_path' in favor of 'instances_per_path'
* Remove SnapshotContext
* InstanceMetadata -> PublicInstanceMetadata in web module
* Build in snapshot testing system for testing... snapshots?
* Remove pretty_assertions to see if it fixes a snapshot comparison bug
* Reintroduce pretty assertions, it's not the cause of inequality
* Fix snapshot tests with custom relative path serializer
