(fix) Chain is now cloneable where it needs to be.
Merge pull request #77 from reem/fix/chain-clone

(fix) Chain is now cloneable where it needs to be.
(feat) Added FromFn to work around upstream issues.
(fix) Updated example to FromFn
Merge pull request #78 from reem/feat/from-fn

(fix) Adds FromFn to work around fn clone issues.