====================
**Added**
- One-dimensional outputs of Nengo objects can be used as scalars in action
rules.
(`139 <https://github.com/nengo/nengo_spa/issues/139>`_,
`157 <https://github.com/nengo/nengo_spa/pull/157>`_)
- Syntactic sugar for complex symbolic expressions:
``nengo_spa.sym('A + B * C')``.
(`138 <https://github.com/nengo/nengo_spa/issues/138>`_,
`159 <https://github.com/nengo/nengo_spa/pull/159>`_)
- Include the achieved similarity in warning issued when desired maximum
similarity could not be obtained.
(`117 <https://github.com/nengo/nengo_spa/issues/117>`_,
`158 <https://github.com/nengo/nengo_spa/pull/158>`_)
- Possibility to name Vocabulary instances for debugging.
(`163 <https://github.com/nengo/nengo_spa/issues/163>`_,
`165 <https://github.com/nengo/nengo_spa/pull/165>`_)
**Changed**
- Make the error message for incompatible types more informative.
(`131 <https://github.com/nengo/nengo_spa/issues/131>`_,
`160 <https://github.com/nengo/nengo_spa/pull/160>`_