data(kana): one sokuon rule for every doubled consonant, and the missing hira rows

Hiragana spelled out 42 doubled syllables (kka, ssha, ttsu, ...) and so
knew none it did not list: matcha, baggu and beddo came out as ma-tc-ha,
ba-gg-u. Katakana already used the engine's small-tsu rule for a few
doubles. Both maps now list every doubled consonant but n, plus tch, and
hiragana gains di, che and fa/fi/fe/fo like katakana.

map/hira.map

@@ -42,10 +42,12 @@ so	そ
 zo	ぞ
 ta	た
 da	だ
+di	ぢ
 ti	ち
 chi	ち
 cha	ちゃ
 chu	ちゅ
+che	ちぇ
 tyu	ちゅ
 cho	ちょ
 ji	じ
@@ -83,6 +85,10 @@ pyu	ぴゅ
 pyo	ぴょ
 hu	ふ
 fu	ふ
+fa	ふぁ
+fi	ふぃ
+fe	ふぇ
+fo	ふぉ
 bu	ぶ
 vu	ぶ
 pu	ぷ
@@ -124,47 +130,23 @@ xi	ぃ
 xu	ぅ
 xe	ぇ
 xo	ぉ
-kka	っか
-kki	っき
-kkya	っきゃ
-kkyu	っきゅ
-kkyo	っきょ
-kku	っく
-kke	っけ
-kko	っこ
-ssa	っさ
-ssi	っし
-sshi	っし
-ssha	っしゃ
-sshu	っしゅ
-sshe	っしぇ
-ssho	っしょ
-ssyo	っしょ
-ssu	っす
-sse	っせ
-sso	っそ
-tta	った
-dda	っだ
-tti	っち
-cchi	っち
-ccha	っちゃ
-cchu	っちゅ
-ttyu	っちゅ
-ccho	っちょ
-ttu	っつ
-ttsu	っつ
-ddu	っづ
-tte	って
-dde	っで
-tto	っと
-ddo	っど
-ppa	っぱ
-ppi	っぴ
-ppya	っぴゃ
-ppyu	っぴゅ
-ppyo	っぴょ
-ppu	っぷ
-ppe	っぺ
-ppo	っぽ
+kk	っ
+ss	っ
+tt	っ
+pp	っ
+cc	っ
+gg	っ
+zz	っ
+jj	っ
+dd	っ
+bb	っ
+hh	っ
+ff	っ
+mm	っ
+yy	っ
+rr	っ
+ww	っ
+vv	っ
+tch	っ
 .	。
 ,	、

map/kata.map

@@ -128,6 +128,17 @@ pp	ッ
 tt	ッ
 tch	ッ
 ss	ッ
+gg	ッ
+zz	ッ
+jj	ッ
+bb	ッ
+hh	ッ
+ff	ッ
+mm	ッ
+yy	ッ
+rr	ッ
+ww	ッ
+vv	ッ
 di	ディ
 fa	ファ
 fi	フィ

tests/engine_test.c

@@ -1065,6 +1065,8 @@ engine_japanese_readings(struct ct *t)
 		char *want;
 	} replay[] = {
 		{ "kitte", "きって" },
+		{ "matcha", "まっちゃ" },
+		{ "baggu", "ばっぐ" },
 		{ "kanj", "かんj" },
 		{ "n'ya", "んや" },
 	};
@@ -1189,6 +1191,7 @@ engine_katakana_sequences(struct ct *t)
 		{ "katta", "カッタ" },
 		{ "gakkou", "ガッコウ" },
 		{ "matcha", "マッチャ" },
+		{ "baggu", "バッグ" },
 		{ "xu", "ゥ" },
 		{ "vu", "ヴ" },
 	};