Major completion provider overhaul; pluigin load and pattern improvements; css overhaul/cleanup; source view state modes added

src/libs/dto/code/text_inserted_event.py

@@ -2,6 +2,11 @@
 from dataclasses import dataclass, field
 
 # Lib imports
+import gi
+
+gi.require_version('Gtk', '3.0')
+
+from gi.repository import Gtk
 
 # Application imports
 from .code_event import CodeEvent
@@ -10,6 +15,6 @@ from .code_event import CodeEvent
 
 @dataclass
 class TextInsertedEvent(CodeEvent):
-    line: int  = 0
-    char: int  = 0
-    value: str = ""
+    location: Gtk.TextIter = None
+    text: str              = ""
+    length: int            = 0