Tue, 30 Jan 2018 20:20:46 +0100 wenzelm tuned;
Tue, 30 Jan 2018 20:12:41 +0100 wenzelm simplified: prod_count is always NONE;
Tue, 30 Jan 2018 19:59:15 +0100 wenzelm tuned;
Tue, 30 Jan 2018 19:45:08 +0100 wenzelm tuned data structure and operations;
Tue, 30 Jan 2018 18:38:18 +0100 wenzelm tuned data structure and operations;
Tue, 30 Jan 2018 16:12:50 +0100 wenzelm tuned data structure and operations;
Tue, 30 Jan 2018 16:05:33 +0100 wenzelm more operations;
Tue, 30 Jan 2018 15:40:01 +0100 wenzelm prefer specific tokens_subtract: subtle change of comparison via tokens_match;
Tue, 30 Jan 2018 15:15:51 +0100 wenzelm tuned type: absorb NONE: token option as token_none: token;
Tue, 30 Jan 2018 14:31:33 +0100 wenzelm tuned;
Tue, 30 Jan 2018 14:27:14 +0100 wenzelm clarified types and operations: potentially more efficient add_prods;
Tue, 30 Jan 2018 11:48:38 +0100 wenzelm clarified modules;
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