bug fixes

Merge pull request #10 from Ali-aqrabawi/develop

Develop

minimal fixs

features:
- send_command_timing

bugs:
- change host to ip for netmiko compatibility.
- raise AionetTimeoutError instead of TimeoutError.

first release

new in this release:

1. code refactor, for better maintainability.
2. textfsm support.
3. enhanced performance by minimizing the unneeded switching between terminal modes.
4. Telnet support