Include cassert only if necessary

[krlmlr]

I'm not sure if this the right thing to do. There are advantages to having a stable set of included files.

Thanks for the very quick review of #48!

[c42f]

I'm not sure this is really worth it. Looking at the contents of <cassert>, it's only adding a couple of hundred lines:

chris@xyz:~/dev/tinyformat$ g++ -E tinyformat.h  | wc -l
37251

chris@xyz:~/dev/tinyformat$ vim tinyformat.h # Remove cassert line

chris@xyz:~/dev/tinyformat$ g++ -E tinyformat.h  | wc -l
37035

So only an additional 200 lines out of 37000 for the rest of the includes. And about half of those seem to be comments or blank lines.

[c42f]

I assume the motivation here is the general (good) principle of avoiding unnecessary includes?

[krlmlr]

Yes; on the other hand, consistent include files are also a nice thing to have.

[c42f]

Hmm, well I could take it or leave it. Guess I'll take it :-)