Update pymodbustcp to 0.1.8

[pyup-bot]

This PR updates pyModbusTCP from 0.1.5 to 0.1.8.

Changelog

0.1.8

- fix ModbusServer: avoid hard coded TCP port (thanks to akobyl).
 - add stop() and is_run property to ModbusServer (thanks to Rugiewitz).

0.1.7

- fix ModbusServer issue on Windows (thanks to andreascian).

0.1.6

- fix multiple TCP packets recv issue in ModbusClient and ModbusServer (thanks Farin94).

Links

• PyPI: https://pypi.org/project/pymodbustcp
• Changelog: https://pyup.io/changelogs/pymodbustcp/
• Repo: https://github.com/sourceperl/pyModbusTCP

[codecov-io]

Codecov Report

Merging #117 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master    #117   +/-   ##
======================================
  Coverage    55.1%   55.1%           
======================================
  Files         109     109           
  Lines        6373    6373           
======================================
  Hits         3515    3515           
  Misses       2858    2858

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[pyup-bot]

Closing this in favor of #438