feat: more time sequence choice

fix: contrast formulation cause leak of high value
fix: empty series_id cause fail to read
chore: restructure folder
chore!: change layer vars
BREAKING CHANGE: not support 4.1 any more

bioxelnodes/bioxel/container.py

@@ -0,0 +1,9 @@
+from .layer import Layer
+
+
+class Container():
+    def __init__(self,
+                 name,
+                 layers: list[Layer] = []) -> None:
+        self.name = name
+        self.layers = layers