(- up module) Bumping LoDash to the new 2.0.0
(new API) [from µpaws] Providing a ##synchronous constructor

This allows an easy way to generate the most common type of execution (at least, the most commonly-generated from JavaScript, type.)

I put a huge amount of effort into ensuring this method is both properly documented *and* properly covered by tests. Let's hope I did a good job.

Squashes: 32e58, d618f..87b59
(- new API) Accepting JavaScript primitives to Thing#find
%%SYNC
+ copying metadata across execution-clones
+ replacing @locals with #locals
+ testing (and documenting) the Execution#clone methods