C memory management

[hobovsky]

Dedicated issue: #230
Preview: here

As I explained to Unnamed below:

[...] my intention [behind this article] is not to create C programmers guide, I am just looking for a way to transfer some ideas to C authors and translators, to get rid of ideas like requirement of mallocing a 3-element array to return hours, minutes, and seconds. Or returning Position**, where each entry is... a pointer to an individually malloced, single Position :( And there are even worse. I just thought about collecting some ideas and throw them at the authors, so they could pick something suitable for their kata. It's meant to be CW- and kata-oriented, and not an industry grade HOWTO ;) That's why I do not want to make things too complex and too detailed. Maybe I already have, maybe this paragraph, or this whole article, is simply not necessary?

Let me know what you think about this article, and even if you think it's not necessary or too detailed, it was a real fun writing it ;)

[Steffan153]

🙄 2 new commits while I'm reviewing...
Edit: Had to delete several outdated suggestions, will redo them when you finish these.