2.5.0

New features

• Measure distance between stations. Hold down shift key, left click on first station, hover over other stations to show distance and x/y/z deltas
  

• Multi-directional surface lighting to improve visibility of features.
  

• GLTF export as .glb binary format now supported

• Babel compiled version provided for compatibility with browsers not implementing full Javascript class syntax

• Support for asynchronous overlay image url generation

• Custom leg shading supported by public API

##Bug fixes

• File open dialog fixed @smudrak
• Missed translation strings
• Automatic display adjustment when moving browser window between monitors with different CSS pixel ratios
• Cosmetic fixes
• Removal of dead code and other improvements