Update list of supported langauge features
Update list of supported langauge features

switch-education/pxt,switchinnovations/pxt,switchinnovations/pxt,switch-education/pxt,Microsoft/pxt,Microsoft/pxt,switchinnovations/pxt,switchinnovations/pxt,switch-education/pxt,Microsoft/pxt,switch-education/pxt,Microsoft/pxt,playi/pxt,playi/pxt,Microsoft/pxt,switch-education/pxt,playi/pxt,playi/pxt