Change project version to 0.2.4

Downgrade project version from 0.3.0 to 0.2.4.

Author: yumisims

meson.build

@@ -1,7 +1,7 @@
 project('PretextMap', ['c', 'cpp'],
     license: 'MIT',
     meson_version: '>=0.57.1',
-    version: '0.3.0'
+    version: '0.2.4'
 )
 
 deps = [dependency('threads')]