Paradox @apidoc 0.7

Features

• Find and render inner classes #98 by @ennru
• Better errors #88 by @raboof

Changes

• Update paradox to 0.6.8 #96 by @raboof
• Release drafter config #95 by @ennru
• Update classgraph to 4.8.58 #93 by @scala-steward
• Update scalatest to 3.1.0 #94 by @scala-steward
• Update sbt-header to 5.3.1 #90 by @scala-steward
• Update sbt to 1.3.4 #87 by @scala-steward