Attempt to add 2018 to release notes section
Attempt to add 2018 to release notes section

Just got the first set of release notes for 2018, and realized that we didn't have a column for that year yet.
HeathH-Concur/developer.concur.com,sarraloew/developer.concur.com,bhague1281/developer.concur.com,HeathH-Concur/developer.concur.com,concur/developer.concur.com,HeathH-Concur/developer.concur.com,concur/developer.concur.com,sarraloew/developer.concur.com,concur/developer.concur.com,concur/developer.concur.com,HeathH-Concur/developer.concur.com,bhague1281/developer.concur.com,bhague1281/developer.concur.com,concur/developer.concur.com,sarraloew/developer.concur.com,sarraloew/developer.concur.com,bhague1281/developer.concur.com,sarraloew/developer.concur.com,bhague1281/developer.concur.com,HeathH-Concur/developer.concur.com