Try to visualise the dep tree changes by dependency updates

[orta]

Could use the yarn lockfile package to get a before and after, then do a JSON diff on that tree, then present that in a reasonable way.

e.g. I add stringify-object to emission

~/dev/projects/artsy/ios/emission master*
❯ yarn why stringify-object
yarn why v1.0.1
[1/4] 🤔  Why do we have the module "stringify-object"...?
[2/4] 🚚  Initialising dependency graph...
[3/4] 🔍  Finding dependency...
error We couldn't find a match!
✨  Done in 1.06s.



~/dev/projects/artsy/ios/emission master*
❯ yarn why get-own-enumerable-property-symbols
yarn why v1.0.1
[1/4] 🤔  Why do we have the module "get-own-enumerable-property-symbols"...?
[2/4] 🚚  Initialising dependency graph...
[3/4] 🔍  Finding dependency...
error We couldn't find a match!
✨  Done in 1.10s.

~/dev/projects/artsy/ios/emission master*
❯ yarn why is-obj
yarn why v1.0.1
[1/4] 🤔  Why do we have the module "is-obj"...?
[2/4] 🚚  Initialising dependency graph...
[3/4] 🔍  Finding dependency...
error We couldn't find a match!
✨  Done in 0.99s.

~/dev/projects/artsy/ios/emission master*
❯ yarn why is-regexp
yarn why v1.0.1
[1/4] 🤔  Why do we have the module "is-regexp"...?
[2/4] 🚚  Initialising dependency graph...
[3/4] 🔍  Finding dependency...
[4/4] 🚡  Calculating file sizes...
info This module exists because "stylelint#execall#clone-regexp" depends on it.
info Disk size without dependencies: "12MB"
info Disk size with unique dependencies: "12MB"
info Disk size with transitive dependencies: "12MB"
info Number of shared dependencies: 0
✨  Done in 0.98s.

I should see that get-own-enumerable-property-symbols and is-obj appear in the tree also.