--------------------------
- `007da6e <https://github.com/openwisp/netjsonconfig/commit/007da6e>`_:
renamed "Coordinated Universal Time" to "UTC"
- `2c1e72e <https://github.com/openwisp/netjsonconfig/commit/2c1e72e>`_:
fixed 'tx_power' ``KeyError``, introduced in `71b083e
<https://github.com/openwisp/netjsonconfig/commit/71b083e>`_
- `aa8b485 <https://github.com/openwisp/netjsonconfig/commit/aa8b485>`_:
added ``utils.evaluate_vars`` function
- `7323491 <https://github.com/openwisp/netjsonconfig/commit/7323491>`_:
simplified implementation of *configuration variables*