5225ef0f02
.. when a spanning tile moves the layout needs to restart to take into account its new position (since it will displace other tiles). .. to enable us to restart the layout we needed to refactor the updateGeometry() method to separate out the creation of animations from layout changes (because an item may be moved several times as spanners take precedence). .. tile column numbers also need to be renumbered from 0 when arranging since it is possible to get out of sync as items are dragged around. .. this refactor should also make it slightly easier to fix any other layout tweaks (now the previous issues have been resolved).
GoldenCheetah
About
GoldenCheetah is a desktop application for cyclists and triathletes and coaches, providing a rich set of tools and models to analyse, track and predict performance, optimise aerodynamics and train indoors.
GoldenCheetah integrates with most popular cloud services like Strava and Todays Plan, imports data from bike computers, imports downloads from any website like TrainingPeaks and Garmin and will also connect to smart trainers using ANT+ and Bluetooth.
GoldenCheetah is free for everyone to use and modify, released under the GPL v2 open source license with pre-built binaries for Mac, Windows and Linux.
Installing
Golden Cheetah install and build instructions are documented for each platform;
INSTALL-WIN32 For building on Microsoft Windows
INSTALL-LINUX For building on Linux
INSTALL-MAC For building on Apple OS X
macOS and Linux: 
Windows:
Official release builds, snapshots and development builds are all available from http://www.goldencheetah.org