Upgrade numpy to 1.14.3

[fabaff]

Description:

Changelog: https://docs.scipy.org/doc/numpy/release.html

Example entry for configuration.yaml (if applicable):

binary_sensor:
  - platform: trend
    sensors:
      random_trend:
        entity_id: sensor.random_sensor
sensor:
  - platform: random

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass

If the code communicates with devices, web services, or third-party tools:

• New dependencies have been added to the REQUIREMENTS variable (example).
• New dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.

[Danielhiversen]

👍