Avoid returning from a finally clause.

It is a bad practice to return from a finally clause, in which case
unhandled exceptions will be lost.

Signed-off-by: Min Chen <minchnew@gmail.com>
Fixed a bug where flows won't be sorted properly.

Signed-off-by: Min Chen <minchnew@gmail.com>
Specify the buckets of a group table entry separately.

Signed-off-by: Min Chen <minchnew@gmail.com>
Meter Table tab is done.

Signed-off-by: Lemon Li <lemon.li@pica8.local>
Signed-off-by: Ira Chen <ichen@pica8.local>