A JS library to calculate popular UK bets

Todo

• [x] Rule 4
• [x] Void/Non-Runner
• [x] Dead Heat

Simple bets

• [x] Single bet
• [x] Double bet
• [x] Treble
• [x] Accumulator

Full cover bets

• [x] Trixie
• [x] Yankee
• [x] Canadian
• [x] Heinz
• [x] Super Heinz
• [x] Goliath
• [ ] Block

Full cover bets with singles

• [x] Patent
• [x] Yap
• [x] Lucky 15
• [x] Lucky 31
• [x] Lucky 63