Add aggregate initialization

docs/api/creation.md

@@ -28,15 +28,17 @@ Creates a new UI element, applying any given properties.
 
 - **Property setting rules**
 
-    - If a table value is another table, that nested table is processed so that
-      any properties inside that table are also applied to the instance just
-      like the outer table.
+
     - If a table index is a string:
+      - If its value is a table then it will attempt to perform aggregate
+        initialization.
       - If its value is a function then it will either bind that property to
         the function or connect it if the property type is a `RBXScriptSignal`.
       - If the value is not a function then the property will be set to that
         value.
     - If a table index is a number:
+      - If its value is a table then that table will be recursively 
+      - processed just like the outer table.
       - If its value is a function then it will parent and bind any instances
         returned by that function as children.
       - If its value is an instance then it will be parented to the instance.

docs/tut/crash-course/2-creation.md

@@ -54,3 +54,17 @@ create "TextButton" {
     end
 }
 ```
+
+You can also use a form of aggregate initialization to create datatypes instead
+of explicitly typing out the class name and constructor.
+
+```lua
+create "Frame" {
+    AnchorPoint = { 0.5, 1 },
+    UDim2 = { 0.5, 0, 0.5, 0}
+}
+```
+
+When a property is assigned a table, Vide will inspect the type of the property
+being assigned to, and call that type's default `new()` constructor with the
+values from the unpacked table.