fix generic VectorT ctor for non float-convertible scalar types



See merge request !22

C++11: Fixed clang warning about missing braces.

closes #8 

See merge request !21

Test Builds with c++11 on mac



See merge request !20

Fixed warnings in unit tests due to unused variables

Fixed Warnings in Unittests

See merge request !19

Gitlab ci mac



See merge request !18

Gitlab ci tests

Enable gitlab ci on master

See merge request !17

Switched Release version to 5.0 and updated changelog

Release Version switch
Updated Changelogs

See merge request !16

Cpp11



See merge request !15

Added explicit static_cast along with static SFINAE checks to VectorT
constructor.

Allows inline specification of colors in HTML syntax.

* Less redundancy.
* We can now make some of the VectorT constructors constexpr which is
useful for other features.

FindCXX11.cmake copied from OpenFlipper.

implement more robust algorithm for surface normal computation

improved algorithm with Newell's Method

proposal to fix issue #7 ?

See merge request !14