[core] log version to info upon startup

Author: terhorst

smcpp/_smcpp.pyx

@@ -17,7 +17,7 @@ from . import logging, version, util
 from .observe import targets
 
 logger = logging.getLogger(__name__)
-logger.debug("SMC++ " + version.version)
+logger.info("SMC++ " + version.version)
 
 init_eigen()