Update info: Translator++ Ver. 5.1.19

Ver. 5.1.19

• add Spreadsheet parser add-on as a default handler for parsing spreadsheet
• fix Better and much faster file encoding detection using GnuWin32 utility
• update UnityTrans ver. 0.4.1
• fix Unable to start a new project from unpatched Unity game
• fix Can not open Translator++ when offline
• update VNTextPatch ver. 0.3.6
• update Added support for more VN engines
• add Link to Translator++ Discord Channel on About section
• fix Various error when object name contain a single quote