v1.4.0: Universal Compatibility (Retail, Classic, & Legacy)

This release makes the addon fully compatible with all WoW versions, from Vanilla (1.12) to The War Within (11.0+).

Feature Detection:

• Implemented intelligent API checking. The addon now detects if the game client supports Specializations.
• Modern Clients (Retail): "Spec Profiles" are enabled. Cursor settings save per-spec and icons auto-switch.
• Legacy Clients (Vanilla/Era): Automatically falls back to "Global Mode". "Spec Profile" options are hidden to prevent confusion and crashes.

UI Updates:

• Updated Config UI to display "Legacy Mode" text when on older clients.
• Hidden "Enable Spec Profiles" toggle on clients that lack support.

Structure:

• Added disclaimer to README regarding legacy client limitations.