Added

• Added a NoSolver solver that can be used to manually pass in a predefined set of decoders or weights to a connection. (#1352)
• Added a Piecewise process, which replaces the now deprecated piecewise function. (#1036, #1100, #1355, #1362)

Changed

• The minimum required version of NumPy has been raised to 1.8. (#947)
• Learning rules can now have a learning rate of 0. (#1356)
• Running the simulator for zero timesteps will now issue a warning, and running for negative time will error. (#1354, #1357)

Fixed

• Fixed an issue in which the PES learning rule could not be used on connections to an ObjView when using a weight solver. (#1317)
• The progress bar that can appear when building a large model will now appear earlier in the build process. (#1340)
• Fixed an issue in which ShapeParam would always store None. (#1342)
• Fixed an issue in which multiple identical indices in a slice were ignored. (#947, #1361)

Deprecated

• The piecewise function in nengo.utils.functions has been deprecated. Please use the Piecewise process instead. (#1100)