v1.6

What's Changed

• CMakelists.txt increased to version 1.5 by @jgalan in #49
• Removed using namespace std from header files and fix errors by @lobis in #50
• Added testing boilerplate, basic tests and global formatting by @lobis in #51
• Lobis remove namespace std from headers by @jgalan in #54
• Fixing bug on inheritance of DrawEvent from base class by @juanangp in #55
• Adding new DrawSignal method, in which a vector of signal IDs is passed as reference (2646704)

Full Changelog: v1.5...v1.6