Use the build system “meson” (close #32)

Replace the build system “setuptools” with “meson”.

src/__init__.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+
+import os
+
+
+
+
+# Set environment
+srcdir = os.path.abspath(os.path.dirname(__file__))
+datadir = os.path.join(srcdir, 'data')
+datadirdev = os.path.join(srcdir, '..', 'data')
+if os.path.exists(datadirdev):
+    datadir = datadirdev
+localedir = None
+localedirdev = os.path.join(srcdir, '..', 'locale')
+if os.path.exists(localedirdev):
+    localedir = localedirdev
+
+# Set GSettings schema dir (if not set already)
+if not os.environ.get('GSETTINGS_SCHEMA_DIR'):
+    os.environ['GSETTINGS_SCHEMA_DIR'] = datadirdev
+
+
+
+
+class Environment:
+    """Wrapper class to access environment settings."""
+
+
+    def get_srcdir():
+        return srcdir
+
+
+    def get_data(subdir):
+        return os.path.join(datadir, subdir)
+
+
+    def get_locale():
+        return localedir