Drop separate token type for unnumbered headings and use heading 2 instead

tests/test_core/test_core_tohtml.py

@@ -288,7 +288,7 @@ def testCoreToHtml_ConvertDirect(mockGUI):
 
     # Unnumbered
     html._tokens = [
-        (html.T_UNNUM, 1, "Prologue", None, html.A_PBB),
+        (html.T_HEAD2, 1, "Prologue", None, html.A_PBB),
         (html.T_EMPTY, 1, "", None, html.A_NONE),
     ]
     html.doConvert()

tests/test_core/test_core_tokenizer.py

@@ -419,7 +419,7 @@ def testCoreToken_HeaderFormat(mockGUI):
 
     tokens.tokenizeText()
     assert tokens._tokens == [
-        (Tokenizer.T_UNNUM, 1, "Prologue", [], Tokenizer.A_PBB),
+        (Tokenizer.T_HEAD2, 1, "Prologue", [], Tokenizer.A_PBB),
         (Tokenizer.T_EMPTY, 1, "", [], Tokenizer.A_NONE),
     ]
     assert tokens.allMarkdown[-1] == "##! Prologue\n\n"
@@ -1340,7 +1340,7 @@ def testCoreToken_ProcessHeaders(mockGUI):
     tokens.setUnNumberedFormat(f"U: {nwHeadFmt.TITLE}")
     tokens.tokenizeText()
     assert tokens._tokens == [
-        (Tokenizer.T_UNNUM, 1, "U: Prologue", [], Tokenizer.A_PBB),
+        (Tokenizer.T_HEAD2, 1, "U: Prologue", [], Tokenizer.A_PBB),
         (Tokenizer.T_EMPTY, 1, "", [], Tokenizer.A_NONE),
     ]
 

tests/test_core/test_core_tomd.py

@@ -213,14 +213,6 @@ def testCoreToMarkdown_ConvertDirect(mockGUI):
     toMD.doConvert()
     assert toMD.result == "# A Title\n\n"
 
-    # Unnumbered
-    toMD._tokens = [
-        (toMD.T_UNNUM, 1, "Prologue", None, toMD.A_PBB),
-        (toMD.T_EMPTY, 1, "", None, toMD.A_NONE),
-    ]
-    toMD.doConvert()
-    assert toMD.result == "## Prologue\n\n"
-
     # Separators
     # ==========