Update schedule

Author: ash

misc/perl6advent-2018/schedule

@@ -12,7 +12,7 @@ exists: https://github.com/zoffixznet/perl6-Acme-Advent-Highlighter
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-10: ash: Make your grammar compact
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 13: [FEEL FREE TO TAKE THIS SPOT] Zoffix: "Those lazy Raku developers!" (exploration of lazy constructs)