1.2.1

Block Chain doc updated

1.2.0

now use method to create DataStructures

1.1.0

• BlockChain API improved
• Hash Table API improved
• Docs updated

1.0.5

Block Chain API added in DS

1.0.4

• One main js bundle file added for each DataStructure
• all main js bundle files exported from mod.js

1.0.2

ES6 supported class private property added in all DS class