perf!: reduce work to build and fix bugs in TileLayer, and improve culling of off-screen tiles
#223
| Job | Run time |
|---|---|
| 1m 40s | |
| 55s | |
| 1m 18s | |
| 4m 17s | |
| 4m 56s | |
| 3m 5s | |
| 16m 11s |