1.5:

• Compatibility with Patch 1.04.
  
• The Altimeter can no longer be used to ascend or descend through floor objects.
  
• By request, the Flume-flier is now moddable (with Common and Electronics mods).
  
• Removed or tweaked code that was causing mod warnings for obsolescence etc.

1.4:

• Made the Jetpack and Altimeter unusable in interior zones.
  
• Made the Altimeter unusable above the stratosphere.
  
• Now uses customised copies of some base game functions for improved compatibility.

1.3:

• Mountains are now traversable (and explorable) on the world map directly if the jetpack is active and the optional Altimeter feature is enabled.
  
• Added additional Harmony code to automatically add the requisite features to a pre-existing instance of the Flume-flier, simplifying support for existing saves.
  
• Fixed a potential registration issue that could arise if the Altimeter option was enabled, disabled and then re-enabled again while the part was active.

1.2: Pre-release update. Now includes an additional, optional feature, the Altimeter. See description for details.

1.0: Initial release.