feat: stdout logging capabilities

- Added feature "stdout_logging" (see README)
- Added config.loglevel option (see config.toml)
- Logging some common things
- Hopefully fix on_new_day_started

config.toml

@@ -1,5 +1,8 @@
 # Default Aliveline config
 
+# Set stdout logging level from 0 to 5, higher is more verbose
+loglevel = 3
+
 # Paths may be relative to config directory or absolute
 [paths]
 logs = "logs"