Timing data updates

Various new features have been implemented after adding clock data to the WPI parser. Special thanks to @bakercp for his description of the WPI format at: libdpen.

Features added:

• Clock counter in JSON output
• Timeline and timeline controls in GUI

Other noteworthy changes:

• Cross-compile support in the build system (GNU/Linux can generate Windows binaries now)
• GNU Coverage tool (gcov) support in the build system (enable with the --enable-gcov flag)

Improvements in almost all aspects of the program

• Completed transition to a portable codebase for GNU/Linux, Windows and Mac OSX;
• Various new configurable things in the GUI and reduced memory usage;
• New command-line options;
• A user guide.

JSON exporter and improved GUI

In this release we have the following new features:

• A JSON exporter;
• Configurable stroke pressure factor;
• Background and foreground colors can be set in the GUI;
• Support for CLANG (for Mac OSX)
• Support for Windows 8 (in addition to Windows 7)

Other than the new features there have also been numerous bugfixes.