sphinx-gradle-plugin-2.3.1

• Updated sphinx-binary to 0.5.0, which includes the following changes:
  • Added modules:
    • Pillow 5.3.0
    • sphinxcontrib-websupport
  • Added missing import os statements in patched modules.
  • PyInstaller 3.3.1 -> 3.4
  • Sphinx 1.7.6 -> 1.8.2
  • sphinx-markdown-tables 0.0.8 -> 0.0.9
  • sphinx_rtd_theme 0.4.1 -> 0.4.2
• Updated dependencies
  • os-maven-plugin 1.5.0 -> 1.6.1
  • PlantUML 1.2018.3 -> 1.2018.12