fix(memlimit): respect parent cgroup limits in v2 (#31)

fix(memlimit): use memory.stat instead of memory.stats (#30)

fix(memlimit): move goroutine execution inside refresh function

ci: bump ubuntu version

fix(memlimit): fix mountinfo validation logic when super options have spaces

chore(examples/gosigar): remove gosigar example

fix(memlimit): fix mountinfo validation logic for multiple optional fields

Fix 32-bit overflows of math.MaxInt64 constant (#25)

docs: update README.md

feat(memlimit): handle ErrNoLimit as math.MaxInt64 during refresh

feat(memlimit): replace containerd/cgroup with own cgroup implementation (#24)

chore: bump containerd/cgroups from v3.0.1 to v3.0.4

feat(memlimit): support dynamic memory limit (#23)

fix(memlimit): don't use format string with slog (#19)

chore: unify log level