[tei-council] Welcome Alejandro and Sarah!

I hope you'll all join me in welcoming our two new members, Sarah Stanley and Alejandro Bia, who Kevin tells me are now subscribed to the list. We're glad you're here, and we look forward to working with you! If you haven't done it yet, you should create https://github.com accounts and send me your usernames, so I can add you to the team. All the best, Hugh