feat: update redis libraries to new versions (RichardKnop#584)

Revert "ensure consuming blocked by previous task (RichardKnop#559) (R…

…ichardKnop#580)" (RichardKnop#583)

This reverts commit 706f08b.

ensure consuming blocked by previous task (RichardKnop#559) (RichardK…

…nop#580)

Co-authored-by: lichunjie <lichunjie@sensetime.com>

push already popped messages back into queue during termination (Rich…

…ardKnop#577)

Update deps (RichardKnop#576)

* update dependencies, don't reload env based config

* update README

* fix unit test

Use UNWATCH when MULTI is not called (RichardKnop#568)

* use unwatch when mutli is not called

* add comment

Fix 413 - (Redis) Simplify TTL (RichardKnop#557)

Set TTL for the key at the same time when setting the value

Fix RichardKnop#529 - Set Redis default concurrency when value is 0 (R…

…ichardKnop#553)

According to the README:
> Use the second parameter of `server.NewWorker` to limit the number of concurrently running
> worker.Process() calls (per worker). Example: 1 will serialize task execution while 0 makes
> the number of concurrently executed tasks unlimited (default).

This change will set the concurrency to 2 * num CPUs when concurrency = 0. While it isn't "unlimited", it is neverthe a practical choice for most workloads (mixed CPU, I/O) and better than 1. This change should make the behavior more consistent with the doc.

Should also fix RichardKnop#535

Co-authored-by: Charles Chan <charles.wh.chan@users.noreply.github.com>
Co-authored-by: Richard Knop <RichardKnop@users.noreply.github.com>

Fix RichardKnop#548 - Use math.Ceil(pollPeriod) to ensure BLPOP timeo…

…ut is an integer (RichardKnop#554)

Co-authored-by: Charles Chan <charles.wh.chan@users.noreply.github.com>

[Redis Broker] Wait for currently processing tasks to finish before c…

…losing the redis pool (RichardKnop#552)