v1.1.2.2_test

bug fixes：
fix bug of call contract fee share operation.
add functions:
1.multiplatform compile support.
2.add quit command in cli_wallet.
3.add test modules.

v1.1.2_release

add functions:
1.change committee-account's threshold from 1/2 of committees number to 2/3 of committees number.
2. optimize connection of websocket.
3.multiplatform compile support.
4.add quit command in cli_wallet.
5.add test modules.

v1.1.2.1_test

add functions:
change committee-account's threshold from 1/2 of committees number to 2/3 of committees number.

v1.1.2_test

add functions:

1. optimize connection of websocket.
2. call contract function fee share and history can query.

v1.1.1_test

add changes:
1.format help info of cli_wallet.
2.support double sign of contract.

v1.1.1_release

add changes:
1.format help info of cli_wallet.
2.support double sign of contract.

v1.1.0: Merge pull request #28 from csquan/master

bug solve:
1.get the calling contract ID in the called contract
add changes:
1.income distribution of unsuccessful candidates changed from average distribution to voting weight.
2.contract private area size limit
3.log collect.

v1.0.9

bug solve:
1.display of small negative position.
add changes:
1.The contract size is configured in congfig, currently 2%，transaction size limit 40K.
2.The mortgage interface change from only accept the name of account to account ID or account name.