Merge branch 'hardbreak'

Fix heading with link

fix action.php

fix headinginfo

Use CoreInlineElement for Newline

fix html tag escape

Fix spurious spaces around inline elements

Without this fix, the code adds a block separator after each element,
which translates to a space before and after each element, including
bold, italics, e

Fix spurious spaces around inline elements

Without this fix, the code adds a block separator after each element,
which translates to a space before and after each element, including
bold, italics, etc. This is especially visible when the element is
followed by punctuation.

The fix makes the code only add a block separator after block elements.

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fix list rendering issue with strikethrough text

Revert "add logic for additional image link rule"

This reverts commit 50c6b1ddef623a1cad3c79c6336583faeca76ef4.

add logic for additional image link rule

add DW wikilink syntax converter

Revert "auto parsing slash to colon inside wikilink"

This reverts commit 41bb96e58a7e78dafbb7d90816ef3412ade890ed.

auto parsing slash to colon inside wikilink

fix frontmatter rendering issue

fix frontmatter check

add frontmatter tag process option

Move tag location to bottom

add VERY basic support of frontmatter_based tag

first 2.0 implementation - at least no error

theleague/commonmark 2.0.x compatibility matching

fix multiline indented code block rendering issue

fix escaping issue on indented code block

fix hr rendering error after list (#16)

prevent inline render inside <code>

fix footnote inside block