Bitmap to v1.1.0

[kelindar]

This PR upgrades the bitmap dependency which has performance improvements to both Range() and Filter() methods by roughly 20% and 5% respectively. Interestingly, this specific benchmark is actually 50% faster.

players.Query(func(txn *Txn) error {
   txn.WithString("race", func(v string) bool {
       return v == "human"
   }).WithString("class", func(v string) bool {
       return v == "mage"
   }).WithFloat("age", func(v float64) bool {
       return v >= 30
   }).Count()
    return nil
})

The reason being is that the second and third scans contain a lot of "holes" in the bitmap and the new implementation quickly skips empty pages and consecutive zero bits.