Sync from wiki/ in tiko-lang 2fee8042f: interfaces (Interface, Inherits, TryCast, tutorial, category), Property rewrite, TIKO_* env vars (32 files) tiko-lang wiki commits since c8d2b2ea2: 7c402e398 wiki: Property -- auto-properties, property blocks, any number of indices, static and namespace properties, byref write-back 0ad026aef wiki: interfaces -- Interfaces Tutorial, Category-Interfaces, Interface, Class, Implements, Inherits, TryCast 1d0ef9227 env: every environment variable is TIKO_*, not TKO_* 2fee8042f wiki: SysWin-RichEdit-TOM -- José Roca's GitHub edit (d5da495), copied back