drop old RN version since 0.16 is a breaking changes

ios/GLCanvasManager.m

 #import "GLCanvasManager.h"
 #import "GLCanvas.h"
 #import "RCTConvert+GLData.h"
-#import "RCTSparseArray.h"
 #import "RCTUIManager.h"
 #import "RCTLog.h"
 #import <UIKit/UIKit.h>
@@ -32,14 +31,15 @@ RCT_EXPORT_VIEW_PROPERTY(onChange, BOOL);
 
 RCT_EXPORT_METHOD(capture: (nonnull NSNumber *)reactTag callback:(RCTResponseSenderBlock)callback)
 {
-  [self.bridge.uiManager addUIBlock:^(RCTUIManager *uiManager, RCTSparseArray *viewRegistry) {
-    GLCanvas *view = viewRegistry[reactTag];
+  [self.bridge.uiManager addUIBlock:^(RCTUIManager *uiManager, NSDictionary<NSNumber *, UIView *> *viewRegistry) {
+    UIView *view = viewRegistry[reactTag];
     if (![view isKindOfClass:[GLCanvas class]]) {
       RCTLog(@"expecting UIView, got: %@", view);
       callback(@[@"view is not a GLCanvas"]);
     }
     else {
-      [view capture:callback];
+      GLCanvas *glCanvas = (GLCanvas *)view;
+      [glCanvas capture:callback];
     }
   }];
 }

ios/GLImage.m

@@ -89,13 +89,14 @@ RCT_NOT_IMPLEMENTED(-init)
                                       scale:0
                                  resizeMode:UIViewContentModeScaleToFill
                               progressBlock:nil
-                            completionBlock:^(NSError *error, id image) {
+                            completionBlock:^(NSError *error, UIImage *image) {
                               _loading = nil;
                               [self clearImage];
                               if (error) {
                                 NSLog(@"Image failed to load: %@", error);
                               } else {
-                                self.image = image;
+                                // we need to copy the image because it seems the image will be altered.
+                                self.image = [UIImage imageWithCGImage:image.CGImage];
                                 if(_onload) _onload();
                               }
                             }];

ios/RNGLContext.m

 
 #import "RNGLContext.h"
-
 #import "RCTConvert.h"
 #import "RCTLog.h"
 

package.json

@@ -19,7 +19,7 @@
   "author": "Project September <tech@projectseptember.com>",
   "license": "MIT",
   "peerDependencies": {
-    "react-native": ">=0.13.0 <0.16.0",
+    "react-native": "0.16.0-rc || >=0.16.0",
     "gl-react": ">= 2.0.0"
   },
   "dependencies": {