修复部分日文汉字无法被推理/训练 (#148)

* Update japanese.py

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text/japanese.py

@@ -361,7 +361,16 @@ def align_tones(phones, tones):
     return res
 
 
+import pykakasi
+
+kks = pykakasi.kakasi()
+
+
 def g2p(norm_text):
+    result = kks.convert(norm_text)
+    norm_text = ""
+    for i in result:
+        norm_text += i["hira"]
     sep_text, sep_kata, acc = text2sep_kata(norm_text)
     sep_tokenized = [tokenizer.tokenize(i) for i in sep_text]
     sep_phonemes = handle_long([kata2phoneme(i) for i in sep_kata])