Hyper docs

cli: add hyper showcase by @shalins in #258
drive: synchronize shared drives by @kanyesthaker in #212
cli: write each of these once by @shalins in #261
nginx: check a host's answers before a deploy relies on them by @shalins in #264
workspace: land an account in the workspace it was let into by @shalins in #259
fix: restore fable 5 responses by @kanyesthaker in #265
workspace: put each answer on the type that owns it by @shalins in #268
attachments: add docx support by @kanyesthaker in #267
docs: add curated changelog notes for v1.2.0 by @shalins in #270
slack: add user message sending by @kanyesthaker in #271