Change log

• Updated to Arrow 18.0.0.
• Updated to ImGui 1.91.4.
• Included support for real-time data using DLL plugins. This feature is still experimental.
• Included message warning the license is about to expired.
• Included horizontal flag object for 2D charts.
• Included option to add a label do the x-axis.
• Fixed black line color for 2D plots with dark theme.
• Other minor bug-fixes and improvements.