Allow override onProgress on Upload

[minwe]

allow user to disable upload progress listener

@see react-component/upload#33 (comment)

and react-component/upload#65

[mention-bot]

@minwe, thanks for your PR! By analyzing the history of the files in this pull request, we identified @afc163, @ystarlongzi and @simaQ to be potential reviewers.

[afc163]

- assign({}, this.props, {
-   onStart: this.onStart,
-   onError: this.onError,
-   onProgress: this.onProgress
-   onSuccess: this.onSuccess,
- });
+ assign({}, {
+  onStart: this.onStart,
+  onError: this.onError,
+  onProgress: this.onProgress
+  onSuccess: this.onSuccess,
+ }, this.props);

We can just switch props order so you can set <Upload onProgress={null} /> for your very special situation. listenUploadProgress is a prop hard to understand.

[afc163]

[minwe]

@afc163 changed and rebased

[afc163]

PR to master

[afc163]

rebase master again, there is still a extra commit.

[minwe]

Rebase done.