FoxVox Update v3.7.2

Changelog:

• Fixed issue with flex grammars not getting added correctly for empty voice command groups (improves recognition)
• Fixed issue with recognition phrase words getting merged together (improves recognition)
• Fixed issue with library data getting disposed when switching speech recognition engines
• Fixed issue with exception log file generated while exiting the application
• Fixed issue with toolbar overflow display visuals not rendering correctly
• Improved keyboard key display names by creating a filtering procedure