fix app title.

merge subject classes.

modify obsevers callback

ensure sunvalley theme loaded only once.

minor version bump

vmcompact/subject.py

@@ -1,35 +1,36 @@
 class Subject:
+    """Adds support for observers"""
+
     def __init__(self):
         """list of current observers"""
 
-        self._observables = []
+        self._observers = list()
 
     def notify(self, modifier=None):
         """run callbacks on update"""
 
-        for observer in self._observables:
-            observer.on_update()
+        [o.on_update(modifier) for o in self._observers]
 
     def add(self, observer):
         """adds an observer to observables"""
 
-        if observer not in self._observables:
-            self._observables.append(observer)
+        if observer not in self._observers:
+            self._observers.append(observer)
 
     def remove(self, observer):
         """removes an observer from observables"""
 
         try:
-            self._observables.remove(observer)
+            self._observers.remove(observer)
         except ValueError:
             pass
 
     def get(self) -> list:
         """returns the current observables"""
 
-        return self._observables
+        return self._observers
 
     def clear(self):
         """clears the observables list"""
 
-        self._observables.clear()
+        self._observers.clear()