Chore: Tweak deps

Fix: Inherit color (styleguidist#652) (close styleguidist#656)

Fix: Remove unused dependency (styleguidist#655)

Fix: Clear console on example reload (styleguidist#638)

Fix: Update react-docgen (styleguidist#635)

The new verison of react-docgen@next adds support for parsing flow
function parameters without names. Eg. 'value: string => void'.

Previously react-docgen was unable to parse files containing flow
annotations like these, and therefore resulting in styleguidist being
unable to render them.

Fix: Correctly print non-Styleguidist exception messages

Fix: Add componentDidCatch() to top-level component (styleguidist#627)

Fix: Do not refresh the page after navigating back from isolated / fo…

…cus mode (styleguidist#617)

Fix: Update deps (close styleguidist#611)

Fix: Update q-i to fix Node 4 compatibility