v0.0.4

Improve task concurrency, reduce progress messages

Await::all() waits until all tasks settle - this is not what we want. Soon as any task completes, we can push another task right away. Channel helps achieve that here.
Progress messages are displayed every +0.01%.

v0.0.3

Use a strategic method to maximize success and minimize failures

Sampling chunks by skipping 2 (and later revisting skipped ones) reduces failure because our requests wont conflict with adjacent chunks which are already pending generation.