Remove unused use statement.

Signed-off-by: crynobone <crynobone@gmail.com>
Load environment configuration from testbench.

Signed-off-by: crynobone <crynobone@gmail.com>
Remove the requirement to use phpseclib fork, as the problem is already
solved on the upstream.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1' into 2.2
Merge branch '2.2'