Update _config.yml

Included self in _config.yml
Added dcowhig to the _config.yml file
Added Thu-Mai to _config.yml
Added Mandy to the _config.yml file
Added Libby to the _config.yml file
Added Amanda to _config.yml file
Added Julie to the _config.yml file
Added Eliza Hinkes to _config.yml

Added myself to the _config.yml
Added Laura to the _config.yml file
Added Madeline Coven to _config.yml file.
Added Ethan to the _config.yml file
katielmeyer's update to _config.yml

Added myself to _config.yml
added Xuxiang Mao to _config.yml
added sunhwa to the _config.yml file
Added Allen to _config.yml
Added Brittany to the _config.yml file
Brendan updated information on himself in _config.yml.
Added Oak to _config.yml
Added yonghao to the _config.yml file
Update _config.yml