Bump dependencies to fix HTML in tables

This updates dependencies, causing #19 to be fixed. This also adds a
regression test for #19.

Cargo.toml

@@ -10,9 +10,9 @@ edition = "2018"
 
 [dependencies]
 mdbook = "0.4.10"
-pulldown-cmark = "0.7.0"
+pulldown-cmark = "0.8.0"
-pulldown-cmark-to-cmark = "4.0.2"
+pulldown-cmark-to-cmark = "6.0.2"
-env_logger = "0.7.1"
+env_logger = "0.8.4"
 log = "0.4.11"
 clap = "2.33.3"
 serde_json = "1.0.57"

tests/it.rs

@@ -145,3 +145,8 @@ fn similar_heading_different_casing() {
 
     assert_toc!("similar_heading_different_casing");
 }
+
+#[test]
+fn tables_with_html() {
+    assert_toc!("tables_with_html");
+}

tests/tables_with_html.in.md

@@ -0,0 +1,5 @@
+# Heading
+
+| Head 1 | Head 2 |
+|--------|--------|
+| <span>Row 1</span> | Row 2  |

tests/tables_with_html.out.md

@@ -0,0 +1,5 @@
+# Heading
+
+|Head 1|Head 2|
+|------|------|
+|<span>Row 1</span>|Row 2|