fragmentProps children field optional (#77)

Author: mununki

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## 0.11.0-rc.3
 
 - Changed `React.jsxKeyed(s)`, `ReactDOM.jsxKeyed(s)` having key as optional argument.
+- Changed `React.fragmentProps` children field to optional.
 
 ## 0.11.0-rc.2
 

src/React.res

@@ -57,7 +57,7 @@ external jsxs: (component<'props>, 'props) => element = "jsxs"
 @module("react/jsx-runtime")
 external jsxsKeyed: (component<'props>, 'props, ~key: string=?, @ignore unit) => element = "jsxs"
 
-type fragmentProps<'children> = {children: 'children}
+type fragmentProps<'children> = {children?: 'children}
 
 @module("react/jsx-runtime") external jsxFragment: component<fragmentProps<'children>> = "Fragment"