retire Symbols
simplify QuotationValidator constructors
override doesn't need to be public
SymbolTable#setLang is unused
make Symbole immutable
retire ConfigurationBuilder#addInvalidPattern(). With this method, Symbols defined in DEFAULT_SYMBOLS / JAPANESE_SYMBOLS get dirty.
migrate type of invalidChars from List<String> to char[]
Merge pull request #333 from recruit-tech/symbols-refactor

retire Symbols simplify QuotationValidator constructors
fix typo: qutotation -> quotation
Merge pull request #334 from recruit-tech/symbols-refactor

symbols-refactor
 Symbol#value type migration:  String to char
 Symbol#value type migration:  String to char
Merge pull request #335 from recruit-tech/typemigration

typemigration
Merge master