##### TODO list:
----------------

- [ ] just test for some change
- [ ] **GUI screen** a screen that will hold table with full state representation
- [ ] **SerpentCompiler** compile create(gas, mem_start, import("examples/mul2.se"))
  https://github.com/ethereum/wiki/wiki/Serpent
- [ ] **SerpentCompiler** compile return(array) correct
- [ ] **ProgramPlayDialog** support internal calls
- [ ] **Performance:** BigInteger math change for constant arrays implementation
economy for memory allocation
- [ ] **Command Line:** add the headless run option
- [ ] **SerpentCompiler** Serpent new syntax:
(@> @< @/ @%) - unsigned operations
 > < / % - default are all signed operations
+= -= *= /= %= @/= @%= - short form operations
share - code section

- [ ] **LLL_to_ASM compiler** list style language to EVM assembly compiler:
- [ ] **Use home-directory** Create .ethereumj in home-directory for blockchain, state & details database. Make configurable in system.properties so developer can choose user.dir without the creation of .ethereumj directory.

##### UnitTest:
----------------

- [ ] **VM complex:** CREATE testing
- [ ] **VM complex:** SUICIDE testing
- [ ] **SerpentCompiler** compile return(array) correct
- [ ] **WorldManager** apply transactions



##### DONE:
-----------

- [X] ** Block Queue ** separate net layer and block processing layer, net layer should continue get
                        blocks in time the vm layer process them (not stuck for it)
- [X] **Build:** extract core module and studio application
- [x] **VM execution:** support CALL op
- [x] **VM execution:** support CALL op with in/out data
- [x] **VM execution:** support CREATE op
- [x] **SerpentCompiler** compile create(gas, mem_start, mem_size)

- [x] **VM complex:** CALL testing for in arrays
- [x] **VM complex:** CALL testing for out result
- [x] **State management** trie for storage hash calculation
                           and update hash into AccountState
- [x] **VM execution:** SUICIDE op adjust
- [x] **Testing by JSON files:** follow cpp client performs test case by getting json file contains the test describe