Moving all the double variants to a sperate header file [C++]

[yoavmil]

I think it would be cleaner to move all the double parts of the library to a different header.
I for example, do not use ClipperD, so for me it makes more sense.

[AngusJohnson]

I've certainly been pondering separating the library into more discrete units.
And I'll probably do that at some stage, it just hasn't been a high priority.
But I'd also value suggestions on what and how much should be separated.

[yoavmil]

The most extreme approach whould be to make it even optional at compilation stage, letting the user to choose at the CMAKE file. For me that is preffered.
The opposite would be just to seperate the headers. this seems to be easier, no?

I'll take a deeper look later.

[yoavmil]

BTW, if you want others to make PR, you are risking having your code changed by contributers formatters, that are different than yours.
The solution for C++ is having a .clang-format file present.

[AngusJohnson]

I don't want anyone making PRs about this yet.