Conflicting types (string, bool) for RNFetchBlobWriteStream.append property

[lll000111]

I know you don't really use the Flow types (very unfortunate I must say), but this is a 10 second fix:

In file https://github.com/wkh237/react-native-fetch-blob/blob/master/class/RNFetchBlobWriteStream.js

there is append : bool;, but in the constructor there is append:string

I guess you could also change encoding to be the same as for the read stream class instead of just string:

encoding : 'utf8' | 'ascii' | 'base64';

PS: This class is not mentioned on Wiki page https://github.com/wkh237/react-native-fetch-blob/wiki/Classes, only RNFetchBlobReadStream EDIT: I added that class, didn't know I could actually do that as a random user :-)

QUESTION (about my edit on the Wiki page): It seems to me "detail" (link to source) is a string? I left out the type when I added that method because I'm not quite sure.

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By the way, after completely ignoring encoding "ascii" for the longest time because I associate that with "old, only 7 bit per byte are used", I now found that the encoding called "ascii" actually means "Uint8Array", i.e. binary. I find the naming very unfortunate, to me it signals the complete opposite of "binary" (I don't think I'm alone in this?). Adding to the confusion is the existence of base64, so that I thought all binary data has to be base64 string encoded.