Add identifier to Snapshot

[hfehrmann]

Hi!

This MR adds an identifier parameter to pretty syntax for Snapshot

I use this feature a lot and felt it was missing.

[dogo]

@hfehrmann thanks for your contribution, you also need to update the PrettySyntax.swift.

▸ Compiling PrettySyntax.swift
❌  /Users/distiller/Nimble-Snapshots/Nimble_Snapshots/PrettySyntax.swift:21:45: extra argument 'identifier' in call
    return Snapshot(name: name, identifier: identifier, record: false, usesDrawRect: usesDrawRect)

[hfehrmann]

@dogo Corrected! I couldn't actually compile the code so I made the modifications blind.

[dogo]

Great! Good job, LFTM @ashfurrow . Let's merge?

[ashfurrow]

Looks good! Sorry for the delay, I was offline. I'll get this released in a new version today.

[ashfurrow-peril]

Thanks a lot for contributing @hfehrmann! You've been invited to be a collaborator on this repo – no pressure to accept! If you'd like more information on what this means, check out the Moya contributor guidelines and feel free to reach out with any questions.

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[ashfurrow]

Alrigty, this was released as 9.1.0. Should be all set, thanks again!