More release notes for v5

More release notes for v5

NEWS entry for 4.0.5 release

Reject invalid UTF-8 byte sequences & unicode code points

Gosh! That was a merry chase. There's a bit of duplication here, but in the spirit of "first make it work..." I'm happy with it. It addresses:

- flat-out illegal byte values
- missing continuation bytes
- unexpected continuation bytes
- overlong encodings
- invalid code points

c.f. https://en.wikipedia.org/wiki/UTF-8

I wish to thank Nicolas Seriot for reporting SBJson#219 which led to this learning opportunity. After 9 years of calling itself a "strict" JSON parser SBJson finally does UTF-8 validation 😂

Merge pull request SBJson#216 from hotbott/master

Add dynamic framework target (Carthage)

Update version to 4.0.2

This version is DEPRECATED. Please upgrade to the latest major versio…

…n. This tag is only created for the benefit of CocoaPods.

Update NEWS and update versions for 4.0.1

Version 4.0.0

Bump version numbers and added NEWS entry