diff --git a/CHANGELOG.md b/CHANGELOG.md
index 331ff883..5a3f4257 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-# novelWriter Change Log
+# novelWriter Changelog
 
 ## Version 1.1 [2021-02-07]
 
@@ -27,6 +27,8 @@ clearer categories and hopefully better help text. Some new options have been ad
 syntax highlighting of multi-paragraph quotes. The highlighter can now optionally accept quotes to
 be left "hanging", that is, no closing quote in the same paragraph.
 
+_These Release Notes also include the changes from 1.1 RC 1._
+
 ### Detailed Changelog
 
 **Bugfixes**
@@ -97,7 +99,7 @@ functionality has been added to the main setup script to create desktop and star
 
 ----
 
-## Version 1.1 RC1 [2021-01-31]
+## Version 1.1 RC 1 [2021-01-31]
 
 ### Release Notes
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 00f7323d..288d2b15 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -5,6 +5,26 @@ issue tracker or the discussions page with the owner of this repository before m
 you just want to make a minor correction, like fix a typo or similar, feel free to just make a pull
 request directly.
 
+## Branching Structure
+
+There are three protected branches on this repository. They are used in the following way:
+
+* `main` – This is the Stable branch. It is used for releases and subsequent patches. No
+  development code should be merged into this branch starting from version 1.0.
+* `dev` – This is the Unstable (development) branch. It is where new features are merged, and where
+  pre-releases are taken from.
+* `testing` – This is the Testing branch. It is populated from the `dev` branch for pre-releases
+  that need a longer testing phase.
+
+Stable releases and patches will be tagged in the `main` branch, pre-releases may be tagged from
+either `testing` or `dev` branch.
+
+### What Branch to Use for Contributions
+
+* If your contribution is a fix for the latest stable release, branch from the `main` branch.
+* If your contribution is a fix for the latest testing release, branch from the `testing` branch.
+* If your contribution is a new feature, branch from the `dev` branch.
+
 ## Pull Request Process
 
 1. Make sure your code passes all tests and conforms to the style guide. You can check that the
diff --git a/MANIFEST.in b/MANIFEST.in
index b3004fc3..0d7dcd2a 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,6 @@
+include setup.py
 include LICENSE.md
+include CHANGELOG.md
 recursive-include setup *
 recursive-include nw/assets *
 recursive-include sample *.nwx *.nwd
diff --git a/nw/config.py b/nw/config.py
index d35582fb..4084394f 100644
--- a/nw/config.py
+++ b/nw/config.py
@@ -272,8 +272,11 @@ class Config:
         self.appPath = getattr(sys, "_MEIPASS", os.path.abspath(os.path.dirname(__file__)))
         self.appRoot = os.path.abspath(os.path.join(self.appPath, os.path.pardir))
 
-        if self.appRoot.endswith(".pyz"):
-            self.appRoot = os.path.abspath(os.path.join(self.appRoot, os.path.pardir))
+        if os.path.isfile(self.appRoot):
+            # novelWriter is packaged as a single file, so the app and
+            # root paths are the same, and equal to the folder that
+            # contains the single executable.
+            self.appRoot = os.path.dirname(self.appRoot)
             self.appPath = self.appRoot
 
         # Assets
diff --git a/nw/gui/theme.py b/nw/gui/theme.py
index 8aa0c1fe..84628cf0 100644
--- a/nw/gui/theme.py
+++ b/nw/gui/theme.py
@@ -203,14 +203,17 @@ class GuiTheme:
         return
 
     def updateFont(self):
-        """Updated the GUI's font style from settings,
+        """Update the GUI's font style from settings.
         """
         theFont = QFont()
         if self.mainConf.guiFont not in self.guiFontDB.families():
             if self.mainConf.osWindows:
-                # On Windows, default to Cantarell provided by novelWriter
-                theFont.setFamily("Cantarell")
-                theFont.setPointSize(11)
+                if "Arial" in self.guiFontDB.families():
+                    theFont.setFamily("Arial")
+                else:
+                    # On Windows, fall back to Cantarell provided by novelWriter
+                    theFont.setFamily("Cantarell")
+                theFont.setPointSize(10)
             else:
                 theFont = self.guiFontDB.systemFont(QFontDatabase.GeneralFont)
             self.mainConf.guiFont = theFont.family()
diff --git a/pyproject.toml b/pyproject.toml
index 9787c3bd..5a4ed8fd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,4 @@
+# Minimal PEP 518 pyproject file
 [build-system]
 requires = ["setuptools", "wheel"]
 build-backend = "setuptools.build_meta"
diff --git a/pytest.ini b/pytest.ini
index c2278317..1aa491bd 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,7 +1,7 @@
 [pytest]
 markers =
-    base: Base functionality tests
-    core: Core functionality tests
+    base: Base classes tests
+    core: Core classes tests
     gui: Qt5 GUI tests
     serial
 qt_api = pyqt5
diff --git a/setup.py b/setup.py
index 99d985e1..c9c9d302 100755
--- a/setup.py
+++ b/setup.py
@@ -402,7 +402,7 @@ def makeSimplePackage(embedPython):
     print("Writing: __main__.py")
     with open(os.path.join(zipDir, "__main__.py"), mode="w") as outFile:
         outFile.write(
-            "#!\"pythonw.exe\"\n"
+            "#!/usr/bin/env python3\n"
             "\n"
             "import os\n"
             "import sys\n"
@@ -419,7 +419,7 @@ def makeSimplePackage(embedPython):
     print("")
 
     pyzFile = os.path.join(outDir, "novelWriter.pyz")
-    zipapp.create_archive(zipDir, target=pyzFile, interpreter="python3")
+    zipapp.create_archive(zipDir, target=pyzFile, interpreter="/usr/bin/env python3")
 
     # Install Dependencies
     # ====================