code: func (b *Bitset) AppendBools(bits ...bool) {
  	b.ensureCapacity(len(bits))
  
  	for _, v := range bits {
  		if v {
  			b.bits[b.numBits/8] |= 0x80 >> uint(b.numBits%8)
  		}
  		b.numBits++
  	}
  }
docs: // AppendBools appends bits to the Bitset.