Opt: 在对NoteGroup进行偏移时，新增的0时间点Timing会出现在NoteGroup开头

Opt: 移除了Note和NoteGroup的type()冗余方法

setup.py

@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="arcfutil",
-    version="0.5.4",
+    version="0.5.5",
     author=".direwolf",
     author_email="[email protected]",
     description="A Python module designed for processing Arcaea related files(.aff chart, songlist, etc.)",

src/arcfutil/aff/note/common_note.py

@@ -30,9 +30,6 @@ def offsetto(self, value: int):
         self.time += value
         return self
 
-    def type(self):
-        return type(self).__name__
-
 
 class NoteGroup(list):
     def __init__(self, *notes):
@@ -69,6 +66,3 @@ def moveto(self, dest: int):
             if each is not None:
                 each.moveto(dest)
         return self
-
-    def type(self):
-        return type(self).__name__

src/arcfutil/aff/note/notegroup.py

@@ -31,7 +31,7 @@ def offsetto(self, value: int):
         for each in self:
             if each is not None:
                 each.offsetto(value)
-        self.append(Timing(0, basebpm, 4))
+        self.insert(0, Timing(0, basebpm, 4))
         return sort(self)
 
 
@@ -64,6 +64,6 @@ def offsetto(self, value: int):
         for each in self:
             if each is not None:
                 each.offsetto(value)
-        self.append(Timing(0, basebpm, 4))
+        self.insert(0, Timing(0, basebpm, 4))
         return sort(self)