Removes cap on mdit-py-plugins version.

Closes:
#27

Addresses:
KyleKing/mdformat-admon#15

pyproject.toml

@@ -27,7 +27,7 @@ keywords = ["mdformat", "markdown", "formatter", "gfm"]
 python = "^3.7"
 mdformat = ">=0.7.5,<0.8.0"
 markdown-it-py = { version = "*", extras = [ "linkify" ] }  # Let `mdformat` choose version boundaries for `markdown-it-py`
-mdit-py-plugins = ">=0.2.0,<0.4.0"
+mdit-py-plugins = ">=0.2.0"
 mdformat-tables = ">=0.4.0"
 
 [tool.poetry.dev-dependencies]