refactor(release): clean up release build process

* handle case where a dist has never been created
* ignore requirements.txt
* include map resources instead of pulling from submodule

pyinstaller.spec

@@ -3,38 +3,47 @@
 block_cipher = None
 
 
-a = Analysis(['__init__.py'],
-             pathex=['C:\\Users\\shdwp\\PycharmProjects\\dcs_liberation'],
-             binaries=[],
-             datas=[
-             ('resources', 'resources'),
-             ('submodules/dcs/dcs/terrain/caucasus.p', 'dcs/terrain/'),
-             ('submodules/dcs/dcs/terrain/nevada.p', 'dcs/terrain/'),
-             ],
-             hookspath=[],
-             runtime_hooks=[],
-             excludes=[],
-             win_no_prefer_redirects=False,
-             win_private_assemblies=False,
-             cipher=block_cipher,
-             noarchive=False)
-pyz = PYZ(a.pure, a.zipped_data,
-             cipher=block_cipher)
-exe = EXE(pyz,
-          a.scripts,
-          [],
-          icon="resources/icon.ico",
-          exclude_binaries=True,
-          name='liberation_main',
-          debug=False,
-          bootloader_ignore_signals=False,
-          strip=False,
-          upx=True,
-          console=True )
-coll = COLLECT(exe,
-               a.binaries,
-               a.zipfiles,
-               a.datas,
-               strip=False,
-               upx=True,
-               name='dcs_liberation')
+analysis = Analysis(
+    ['__init__.py'],
+    pathex=['.'],
+    binaries=[],
+    datas=[
+        ('resources', 'resources'),
+        ('resources/caucasus.p', 'dcs/terrain/'),
+        ('resources/nevada.p', 'dcs/terrain/'),
+    ],
+    hookspath=[],
+    runtime_hooks=[],
+    excludes=[],
+    win_no_prefer_redirects=False,
+    win_private_assemblies=False,
+    cipher=block_cipher,
+    noarchive=False,
+)
+pyz = PYZ(
+    analysis.pure,
+    analysis.zipped_data,
+    cipher=block_cipher,
+)
+exe = EXE(
+    pyz,
+    analysis.scripts,
+    [],
+    icon="resources/icon.ico",
+    exclude_binaries=True,
+    name='liberation_main',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    console=True,
+)
+coll = COLLECT(
+    exe,
+    analysis.binaries,
+    analysis.zipfiles,
+    analysis.datas,
+    strip=False,
+    upx=True,
+    name='dcs_liberation',
+)