Merge Novel Layouts (#837)

* Merge novel layouts and simplify the Tokenizer class
* Fix core tests
* Delete auto-layout code
* Remove no longer needed item layouts
* Remove references to deleted item layouts in test
* Make some minor changes to Tokenizer class and update tests
* Update test reference files
* Update sample project
* Fix a few issues with the Tokenizer
* Centre some text in the sample documents
* Make some minor changes to how new projects are generated
* Add support for New Page and VSpace commands to the Tokenizer
* Remove Title and Page layouts and add codes for page break and vertical space
* Add document layout and fix some issues in index class with new title formats
* Update tests and reference files
* Bump the project file version and fix a minor issue in items class
* Update tests and test coverage
* Clean up some warnings and issues in tests

nw/enum.py

@@ -56,15 +56,9 @@ class nwItemClass(Enum):
 
 class nwItemLayout(Enum):
 
-    NO_LAYOUT  = 0
-    TITLE      = 1
-    BOOK       = 2
-    PAGE       = 3
-    PARTITION  = 4
-    UNNUMBERED = 5
-    CHAPTER    = 6
-    SCENE      = 7
-    NOTE       = 8
+    NO_LAYOUT = 0
+    DOCUMENT  = 1
+    NOTE      = 2
 
 # END Enum nwItemLayout