Add VirtualizedSectionList / SectionList stickySectionHeadersEnabled prop (#416)

Author: MoOx

reason-react-native/src/components/SectionList.md

@@ -12,8 +12,9 @@ type ref = React.Ref.t(Js.nullable(element));
 external make:
   (
     ~ref: ref=?,
-    // SectionList props
+    // VirtualizedSectionList props
     ~sections: array(VirtualizedSectionList.section('item)),
+    ~stickySectionHeadersEnabled: bool=?,
     ~renderItem: VirtualizedSectionList.renderItemCallback('item),
     ~renderSectionHeader: VirtualizedSectionList.renderSectionHeaderCallback(
                             'item,

reason-react-native/src/components/SectionList.re

@@ -5,8 +5,9 @@ type ref = React.Ref.t(Js.nullable(element));
 external make:
   (
     ~ref: ref=?,
-    // SectionList props
+    // VirtualizedSectionList props
     ~sections: array(VirtualizedSectionList.section('item)),
+    ~stickySectionHeadersEnabled: bool=?,
     ~renderItem: VirtualizedSectionList.renderItemCallback('item),
     ~renderSectionHeader: VirtualizedSectionList.renderSectionHeaderCallback(
                             'item,

reason-react-native/src/components/VirtualizedSectionList.md

@@ -34,6 +34,7 @@ external make:
     ~ref: ref=?,
     // VirtualizedSectionList props
     ~sections: array(section('item)),
+    ~stickySectionHeadersEnabled: bool=?,
     ~renderItem: renderItemCallback('item),
     ~renderSectionHeader: renderSectionHeaderCallback('item)=?,
     ~renderSectionFooter: renderSectionHeaderCallback('item)=?,

reason-react-native/src/components/VirtualizedSectionList.re

@@ -27,6 +27,7 @@ external make:
     ~ref: ref=?,
     // VirtualizedSectionList props
     ~sections: array(section('item)),
+    ~stickySectionHeadersEnabled: bool=?,
     ~renderItem: renderItemCallback('item),
     ~renderSectionHeader: renderSectionHeaderCallback('item)=?,
     ~renderSectionFooter: renderSectionHeaderCallback('item)=?,