Compiling in Release disables asserts, making variables unused (Werror)

Some code should be changed to allow compiling in release mode.

changed milestone to %0.2.0

added build system label

created branch amiranda/58-compiling-in-release-disables-asserts-making-variables-unused-werror to address this issue

mentioned in merge request !63 (merged)

mentioned in commit 3454a626

closed with merge request !63 (merged)