Support pkpasses files i.e. multiple pkpass files in one ZIP file

[ericzolf]

I've met for the first time this format: a file named something.pkpasses, I can rename it to .zip, then extract multiple .pkpass files, and load them one by one into PassAndroid. It would be really nice and helpful if PassAndroid could register for this file ending, and do all the necessary magic in the background.

[ligi]

Thanks - was not yet aware of pkpasses. But seems this is official - so I will try to support it.

[matthias-vorwerk]

I support this proposal. I also received a *.pkpasses (zip) file containing (in my case) two *.pkpass files.

I also want to mention that this is a wonderful and so useful app! Thank you so much for porting this ticket wallet functionality to android and make it open source!