Put the data validation test read into a try block
Add test with write-only handles

Closes #8
Test closed filehandle
Add test for un-seekable handles

Closes #9
Update changelog for today's work
Missing semicolon
Extra space in the call to validate_date
Real and Date had duplicate type constants
Revert "Extra space in the call to validate_date"

This reverts commit 1d5a2a6e41fd71c22772a7d2f7806c957a1dacf5.
Extra space in the call to validate_date
Updated Email payload for iOS 8
Cert payloads are not changed in iOS 8.
iOS 8 still has problems with the Password key