EGS v0.0.8.7

• Fixes related to the new four-port bus nodes:
  • Fix for four-port bus nodes when using the Find node dialog
  • Fix when changing the name in four-port bus nodes
  • Fix for loading old EGS files (*.egs) with new four-port bus nodes
• Several changes on the Find node dialog:
  • Use the ESC key to close the dialog.
  • Press twice the TAB key to navigate through the node list. Move through the list using TAB (and Shift + TAB) or the arrow keys.
  • The search box is now focused when opening the dialog (no more click needed).
  • New implementation using QButtonGroup.
• The dialog for connecting buses is now wider.
• Fix for some tooltips when using the dark theme on MS Windows. More information about this PyQtDarkTheme bug and workaround can be found here.
• Added an opening splash screen.
• The power flow calculation now uses the concurrent.futures module for faster response.
• Minor fix on the Connect buses with... dialog.
• Connections (pipes) no longer use pointers (arrows).

Full Changelog: v0.0.8.6...v0.0.8.7