Removed InstanceSnapshot snapshot_id's redudant Ref. (#730)

Ref now is an optional inside, so it's redundant to have an option
wrapping an option. The only snapshots that were changed were any that
had a Ref within (from none to zeroed). Some also had some newlines
added in the end.

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__csv__test__csv_from_vfs.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/csv.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__csv__test__csv_with_meta.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/csv.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__dir__test__empty_folder.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/dir.rs
-assertion_line: 127
 expression: instance_snapshot
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__dir__test__folder_in_folder.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/dir.rs
-assertion_line: 148
 expression: instance_snapshot
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:
@@ -23,7 +22,7 @@ name: foo
 class_name: Folder
 properties: {}
 children:
-  - snapshot_id: ~
+  - snapshot_id: "00000000000000000000000000000000"
     metadata:
       ignore_unknown_instances: false
       instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__json__test__instance_from_vfs.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/json.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__json_model__test__model_from_vfs.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/json_model.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:
@@ -17,7 +16,7 @@ properties:
   Value:
     Int64: 5
 children:
-  - snapshot_id: ~
+  - snapshot_id: "00000000000000000000000000000000"
     metadata:
       ignore_unknown_instances: false
       relevant_paths: []

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__json_model__test__model_from_vfs_legacy.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/json_model.rs
-assertion_line: 186
 expression: instance_snapshot
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:
@@ -17,7 +16,7 @@ properties:
   Value:
     Int64: 5
 children:
-  - snapshot_id: ~
+  - snapshot_id: "00000000000000000000000000000000"
     metadata:
       ignore_unknown_instances: false
       relevant_paths: []

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__lua__test__client_from_vfs.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/lua.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__lua__test__module_from_vfs.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/lua.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__lua__test__module_with_meta.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/lua.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__lua__test__script_disabled.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/lua.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__lua__test__script_with_meta.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/lua.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__lua__test__server_from_vfs.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/lua.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__project__test__project_from_direct_file.snap

@@ -2,7 +2,7 @@
 source: src/snapshot_middleware/project.rs
 expression: instance_snapshot
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:
@@ -14,3 +14,4 @@ name: direct-project
 class_name: Model
 properties: {}
 children: []
+

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__project__test__project_path_property_overrides.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/project.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__project__test__project_with_children.snap

@@ -2,7 +2,7 @@
 source: src/snapshot_middleware/project.rs
 expression: instance_snapshot
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:
@@ -14,7 +14,7 @@ name: children
 class_name: Folder
 properties: {}
 children:
-  - snapshot_id: ~
+  - snapshot_id: "00000000000000000000000000000000"
     metadata:
       ignore_unknown_instances: true
       instigating_source:
@@ -29,3 +29,4 @@ children:
     class_name: Model
     properties: {}
     children: []
+

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__project__test__project_with_path_to_project.snap

@@ -2,7 +2,7 @@
 source: src/snapshot_middleware/project.rs
 expression: instance_snapshot
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:
@@ -15,3 +15,4 @@ name: path-project
 class_name: Model
 properties: {}
 children: []
+

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__project__test__project_with_path_to_project_with_children.snap

@@ -2,7 +2,7 @@
 source: src/snapshot_middleware/project.rs
 expression: instance_snapshot
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:
@@ -15,7 +15,7 @@ name: path-child-project
 class_name: Folder
 properties: {}
 children:
-  - snapshot_id: ~
+  - snapshot_id: "00000000000000000000000000000000"
     metadata:
       ignore_unknown_instances: true
       instigating_source:
@@ -30,3 +30,4 @@ children:
     class_name: Model
     properties: {}
     children: []
+

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__project__test__project_with_path_to_txt.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/project.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__project__test__project_with_resolved_properties.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/project.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__project__test__project_with_unresolved_properties.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/project.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: true
   instigating_source:

src/snapshot_middleware/snapshots/librojo__snapshot_middleware__txt__test__instance_from_vfs.snap

@@ -1,9 +1,8 @@
 ---
 source: src/snapshot_middleware/txt.rs
 expression: instance_snapshot
-
 ---
-snapshot_id: ~
+snapshot_id: "00000000000000000000000000000000"
 metadata:
   ignore_unknown_instances: false
   instigating_source: