IndividualVotes constructor
Creates individual dots that react with the group overall color :
• index is the increasing index starting at 0 for the dots from left to right.
• voteResult is TRUE if voted for, FALSE if vote against and NULL if not voted.
• groupPairing is a nullable String used to group dots around a single appearance and compare : see GroupPairing.
Implementation
IndividualVotes(this.index, {this.voteResult, this.groupPairing});