Upload first null-safety version

+## 2.0.0-nullsafety.1 - Null Safety support
++ Fixes #119 & #113
+
 ## 1.0.0 - An optimized modal + Breaking change
 - An optimized builder function.
 - The `builder` param has changed from:

@@ -87,7 +87,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.0.0+1"
+    version: "2.0.0-nullsafety.1"
   path:
     dependency: transitive
     description:

 name: example
 description: A new Flutter project.
-
+publish_to: none
 # The following defines the version and build number for your application.
 # A version number is three numbers separated by dots, like 1.2.43
 # followed by an optional build number separated by a +.

@@ -231,7 +231,7 @@ class _ModalBottomSheetState extends State<ModalBottomSheet>
     // ignore: unawaited_futures
     _bounceDragController.reverse();
 
-    bool canClose = true;
+    var canClose = true;
     if (widget.shouldClose != null && hasReachedWillPopThreshold) {
       _cancelClose();
       canClose = await shouldClose();

@@ -87,7 +87,7 @@ packages:
       name: pedantic
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.2"
+    version: "1.10.0-nullsafety.3"
   sky_engine:
     dependency: transitive
     description: flutter

 name: modal_bottom_sheet
 description: 'Create awesome and powerful modal bottom sheets. Material, Cupertino iOS 13 or create your own style'
-version: 1.0.0+1
+version: 2.0.0-nullsafety.1
 homepage: 'https://github.com/jamesblasco/modal_bottom_sheet'
 
 environment:
@@ -14,7 +14,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  pedantic: ^1.8.0+1
+  pedantic: 1.10.0-nullsafety.3
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec