Version bump

Author: DNA-styx

.github/workflows/increment.yaml

@@ -27,4 +27,4 @@ jobs:
           target_file: 'theme_version.txt'
           prefix: '** '
           suffix: ' **'
-          commit_message: 'Theme version updated to v0.1.63-dev.'
+          commit_message: 'Theme version updated to v0.1.64-dev.'