Update config.yml.dist
Update config.yml.dist

Switched out sendgrid for Sparkpost, because Sendgrid changed their pricing model and now only offer free trails, and Sparkpost is still free up to 100.000 mails
lenvanessen/bolt,nikgo/bolt,lenvanessen/bolt,nikgo/bolt,GawainLynch/bolt,GawainLynch/bolt,lenvanessen/bolt,lenvanessen/bolt,GawainLynch/bolt,romulo1984/bolt,bolt/bolt,nikgo/bolt,romulo1984/bolt,romulo1984/bolt,bolt/bolt,romulo1984/bolt,bolt/bolt,bolt/bolt,nikgo/bolt,GawainLynch/bolt