`:fenced_code_blocks:` Blocks delimited with 3 or more ~ or backticks will be considered as code, without the need to be indented. An optional language name may be added at the end of the opening fence for the code block.
`:disable_indented_code_blocks:` Do not parse usual markdown code blocks. Markdown converts text with four spaces at the front of each line to code blocks. This option prevents it from doing so. Recommended to use with fenced_code_blocks: true.
Fixes#2764
Fold one-used event_status_icon and one-used booth_status_icon into
status_icon, used twice; since there is no conflict on the status-
driven description.
