fix other minor typos

Author: markreidvfx

aaf2/components.py

@@ -88,7 +88,7 @@ def index_at_time(self, edit_unit):
                 if edit_unit >= position and edit_unit < position + component.length:
                     return index
 
-            # gone past return prevous
+            # gone past return previous
             if last_component and position >= edit_unit:
                 return last_index
 

aaf2/file.py

@@ -45,7 +45,7 @@ def from_name(self, name, *args, **kwargs):
             raise ValueError("no class found with name: %s" % name)
 
         if not classdef.concrete:
-            raise ValueError("cannnot initialize abstract class: %s" % name)
+            raise ValueError("cannot initialize abstract class: %s" % name)
 
         classobj = self.root.metadict.lookup_class(name)
 

aaf2/properties.py

@@ -361,7 +361,7 @@ def value(self, value):
             self.ref = mangle_name(propdef.property_name, self.pid, 32)
             self.data = self.encode(self.ref)
 
-        # before asigning new object detach old
+        # before assigning new object detach old
         if self.object:
             self.object.detach()
             self.object = None
@@ -751,7 +751,7 @@ def read_index(self):
             key       = index_data[index + 2]
 
             # not sure if ref count is actually used
-            # doesn't apear to be
+            # doesn't appear to be
             assert ref_count == 1
 
             if self.key_size == 16: