3.0.21
- BigInteger: speed up powMod() method (#1919)
- SSH2: fix stream_select(): Unable to select [4]: Interrupted system call (max_fd=29) error (#1851)
- SSH2: add EOF test isConnected() (#1926)
- SFTP: make it so SFTP::RESUME also sets offset of local file (#1921)
- SFTP: SFTP::RESUME_START didn't work as described (#1921)