utf8Bidi() Persion 0x200C(8204) and endedletter bug fixed.
utf8Bidi() Bidirectional Algorithm X9/I1 rule BN(ZERO WIDTH NON-JOINER) bug fixed.
utf8Bidi() Bidirectional Algorithm N1/N2 rule B/S/WS/ON bug fixed.
utf8Bidi() Bidirectional Algorithm W2/W7 rule bug fixed.
utf8Bidi() Bidirectional Algorithm N1/N2 rule multiple NIs bug fixed.
RTL direction problem fixed. isRTLTextDir direction bug fixed.
utf8Bidi() speed was improved.
Update version 1.18.4