feat: move gomod files into v1/ v2/ folders

fix: update github.com/go-redsync/redsync to v4.0.4

fix: update github.com/go-redsync/redsync to v4.0.4

V2 integration tests (RichardKnop#628)

* fix: fix redis issues

* fix: fix examples

* feat: v2 integration tests, improvements

* chore: move examples into v1/v2 subfolders

fix: fix redis issues (RichardKnop#626)

* fix: fix redis issues

* fix: fix examples

v1/common/broker.go: add read lock for registerdTaskNames (RichardKno…

…p#623)

chore: update dependencies (RichardKnop#618)

fix: make registerTask safe on concurrent use (RichardKnop#616)

Co-authored-by: chengwanli <chengwanli@p1staff.com>

fix: make sure eager lock is defaulted to (RichardKnop#611)

chore: update README