11092bf436
.. introducing the athlete view .. at startup the first athlete is loaded as normal, but once the mainwindow is open the athletes are managed from the athlete view .. athlete ride cache restore happen in background (via a thread) to enable the GUI to remain responsive whilst it takes place (since for most non-trivial cases it can take 30 seconds or more). .. multiple mainwindows has been deprecated and whilst each open athlete is selected via a tab, this will change to a combobox in later commits. .. the tiles in the athlete view do very little apart from show the avatar and progress/load status when an athlete is being loaded. .. future commits will introduce more detail and actions for the athlete tile and deprecate the athlete tab bar for a combo on the toolbar (amongst other things).
GoldenCheetah
About
GoldenCheetah is an open-source data analysis tool primarily written in C++ with Qt for cyclists and triathletes with support for training as well.
GoldenCheetah can connect with indoor trainers and cycling equipment such as cycling computers and power meters to import data.
In addition, GoldenCheetah can connect to cloud services.
It can then manipulate and view the data, as well as analyze it.
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:
Alternatively, official builds are available from http://www.goldencheetah.org
whilst the latest developer builds are available from https://github.com/GoldenCheetah/GoldenCheetah/releases