fix(regex, format): Improve regex boundary matching and remove duplicates (#36)

* tweak(regex):  Improve SM737 boundary matching

* remove(regex): Duplicate patterns created by group tiers

* tweak(group_tiers): Prevent creation of duplicate patterns

* tweak(regex): Use `THREESOME` instead of `threesome`

* tweak(regex): Rename `Colour` to `Colourisation`

* tweak(regex): Improve `Colourisation` description

custom_formats/1080p Quality Tier 2.yml

@@ -12,13 +12,13 @@ conditions:
   resolution: 1080p
   type: resolution
 - name: Not WEB-DL
-  type: source
-  required: true
   negate: true
+  required: true
   source: web_dl
-- name: c0ke
+  type: source
+- name: c0kE
   negate: false
-  pattern: c0ke
+  pattern: c0kE
   required: false
   type: release_group
 - name: CtrlHD