Adding Roman Numerals

I'll just reprise a blog post because I'm going to be somewhat pressed for time. I *really* want to do Babylonian but that'd mean rewriting the Perl 6 core a bit. The other reason is that the cuneiform numbers aren't exactly common in Unicode fonts, so it won't play as well. But I *will* do it, damnit.

misc/perl6advent-2016/schedule

@@ -8,14 +8,14 @@ Please add your topic and name after each day that you plan to take.
  7 [claim this spot if you want to write; move this post down] Zoffix: "Set In Your Ways: Perl 6's Setty and Baggy Types"
  8 [claim this spot if you want to write; move this post down] Coke: "I'm sure I'll think of something in time."
  9 [claim this spot if you want to write; move this post down] Zoffix: "How To Make, Use, And Abuse Perl 6 Subsets"
-10 [claim this spot if you want to write; move this post down] Zoffix: "When a Rat Got Too Fat: Perl 6 For Accountants"
-11 brrt: A preview of the hackable JIT
-12 RabidGravy: audio streaming done completely wrong.
-13 cygx: Targetting MoarVM: The Wrong Way [tentative]
-14 zostay: Using Grammars to Parse HTTP
-15 ugexe: The Meta spec, Distribution, and CompUnit::Repository explained-ish
-16 jnthn: Testing in virtual time
-17
+10 drforr: Kicking it Old School: Add Roman Numerals to Perl 6
+11 [claim this spot if you want to write; move this post down] Zoffix: "When a Rat Got Too Fat: Perl 6 For Accountants"
+12 brrt: A preview of the hackable JIT
+13 RabidGravy: audio streaming done completely wrong.
+14 cygx: Targetting MoarVM: The Wrong Way [tentative]
+15 zostay: Using Grammars to Parse HTTP
+16 ugexe: The Meta spec, Distribution, and CompUnit::Repository explained-ish
+17 jnthn: Testing in virtual time
 18 RabidGravy: asynchronous workflow
 19 nige: Perl 6 toys to remember
 20 tadzik: Perl 5, Perl 6, and threading one with the other