Large refactor and code cleanup.

abase-properties.lua

@@ -0,0 +1,27 @@
+-- functions for retrieving and modifying layer properties
+extKey = "annabunches/abase"
+
+local function IsIgnored(layer)
+    return layer.properties(extKey).ignored
+end
+
+local function IsMerged(layer)
+    return layer.isGroup and layer.properties(extKey).merged
+end
+
+local function SetIgnored(layer, ignore)
+    layer.properties(extKey).ignored = ignore
+end
+
+local function SetMerged(layer, merge)
+    if not layer.isGroup then return end
+    layer.properties(extKey).merged = merge
+end
+
+local export = {
+    IsIgnored = IsIgnored,
+    IsMerged = IsMerged,
+    SetIgnored = SetIgnored,
+    SetMerged = SetMerged,
+}
+return export