Switch post

Don't wanna write my original idea anymore, gonna write
"Perl 6 Core Hacking: How, Where, What, and Why" instead.
To drive more people to contribute to core code.

If Web Gods willing, the contributing.perl6.org will be done by the time post publishes.

misc/perl6advent-2016/schedule

@@ -22,4 +22,4 @@ Please add your topic and name after each day that you plan to take.
 21
 22
 23
-24 Zoffix: (non-technical write up)
+24 Zoffix: "Perl 6 Core Hacking: How, Where, What, and Why"