Pygments 2.3.0

on Python PyPI

Added lexers:

• Fennel (PR#783)
• HLSL (PR#675)

Updated lexers:

• Dockerfile (PR#714)

Minimum Python versions changed to 2.7 and 3.5

Added support for Python 3.7 generator changes (PR#772)

Fix incorrect token type in SCSS for single-quote strings (#1322)

Use terminal256 formatter if TERM contains 256 (PR#666)

Fix incorrect handling of GitHub style fences in Markdown (PR#741, #1389)

Fix %a not being highlighted in Python3 strings (PR#727)