D294 seeks to introduce a requirement for a C++14 compiler.
This does not work with current Travis definitions file - some adaptations are going to be needed there.
I've created an experimental branch on my repo at
Some trials will be performed there to see if the Travis setup can be bent into shape.
If the project direction is going to be to not use Travis, I would appreciate a heads up so that we can save effort, because almost certainly changes to Travis are going to have knock-on effects on its builds / tests.