Exposed scanned image duration to iOS SDK

[ClaudeSutterlin]

There was no way to reduce scanned image duration to 0 seconds, so there was always a flash of the card numbers on the screen. We had a client request that the numbers are never shown in that manner, so I exposed that value to the SDK.

There was some inconsistency in code formatting, so apologies for those modifications. I ended up using the following settings for my changes:
Tab width: 2 spaces
Indent width: 2 spaces
✓ Automatically trim trailing whitespace
✓ Including whitespace-only lines

[burnto]

Doesn't really matter, but since this isn't a substantive change, probably worth removing from this PR.

[josharian]

Thanks. This seems reasonable, and the implementation is definitely straightforward. I've not thought much about iOS in a while, though; @dgoldman-ebay what do you think?

I appreciate the whitespace cleanup. However, I'd like to keep it separate from the functional changes. I pulled it in as 6732275; thanks! This means you'll need to rebase these changes, for which I apologize...but the resulting commit should be much cleaner. If you would, please take this opportunity to also squash your three commits into one. Please also revert the changes to .gitmodules and icc.xcodeproj/project.pbxproj. (If you don't know how to do these things, just let me know and I can help.)

[dgoldman-pdx]

I'll wait until @ClaudeSutterlin has a chance to follow @josharian's requests, and then do a nice and picky review. 😺

[ClaudeSutterlin]

@josharian @dgoldman-ebay Thanks folks, I was being a little bit careless. I'll sort those issues out.

Regarding my change to .gitmodules though, I was getting a permission denied issue when trying to pull down the submodules per your instructions. After I updated the path to how you see it here, I was able to sync them. I'll revert the changes, but thought I'd give a heads up.

[josharian]

@ClaudeSutterlin regarding .gitmodules, it's tricky -- some folks don't have github/ssh playing together nicely, but others don't have a credential cache set up, so https is frustrating for them. I'd prefer to leave it as ssh instead of https, although I'm open to compelling arguments to the contrary. In the meantime, the best suggestion I have (which is not great) is to use insteadOf: https://coderwall.com/p/sitezg/force-git-to-clone-with-https-instead-of-git-urls.

[braebot]

Feel free to submit arguments for/against https & ssh in an SO question I asked long ago. :)

Jeff