Lambda on the heap followup

[lefticus]

using new auto follow up to #169

[LB--]

Don't forget also that Class Template Argument Deduction with a class with no constructors is also a viable option: https://compiler-explorer.com/z/1o4sMc8E4
This allows you to bundle the lambda with other stuff in the same allocation, or even multiple lambdas at once (e.g. new Overloads{...})

[lefticus]

Coming in Ep478