aDecoder.decodeInteger on nullable int causes crash

[tipa]

In my fork, I disabled html pasting, which causes a crash when the user tries to copy-paste lists.
This is because Aztec might encode a nil-int when performing the copy:

AztecEditor-iOS/Aztec/Classes/TextKit/ParagraphProperty/TextList.swift

Line 83 in e0cb3c9

aCoder.encode(start, forKey: AttributeType.start.rawValue)

Now, when pasting, a crash occurs here because it expects a non-nil-int:

AztecEditor-iOS/Aztec/Classes/TextKit/ParagraphProperty/TextList.swift

Line 64 in e0cb3c9

let decodedStart = aDecoder.decodeInteger(forKey: AttributeType.start.rawValue)

This can be fixed by changing that line to:

let decodedStart = aDecoder.decodeObject(forKey: AttributeType.start.rawValue) as? Int

[SergioEstevao]

Hi there, first of all thanks for the great bug report, do you want to submit a PR for the fix? I will review it and approve it if all goes well. It will also be great to add unit test for this specific crash in order to prevent future regressions.