Added balance change calculation. Added "getGuaranteedBalance".
Added balance change calculation.
Added "getGuaranteedBalance".

Ziftr/nxt,fimkrypto/nxt,dmkaplan2000/nxt_dmk,duckx/nxt,dmkaplan2000/nxt_dmk,fimkrypto/nxt,dmkaplan2000/nxt_dmk,Ziftr/nxt,Ziftr/nxt,duckx/nxt,duckx/nxt,fimkrypto/nxt,metrospark/czarcraft,fimkrypto/nxt,metrospark/czarcraft,metrospark/czarcraft