Update to v0.12.3 (#12)

* update to v0.12.3

* Update README.md

* Update README.md

Author: stevenlcf

README.md

@@ -1,13 +1,11 @@
-# cChannel-eth (WIP)
+# cChannel-eth
 
 [![Build Status](https://travis-ci.org/celer-network/cChannel-eth.svg?branch=master)](https://travis-ci.org/celer-network/cChannel-eth)
 
 * [Overview](https://github.com/celer-network/cChannel-eth#overview)
-* [Work In Progress (WIP) Notice](https://github.com/celer-network/cChannel-eth#work-in-progress-wip-notice)
 * [Core Concepts](https://github.com/celer-network/cChannel-eth#core-concepts)
 * [Release Features](https://github.com/celer-network/cChannel-eth#release-features)
 * [Protocol Buffers Usage](https://github.com/celer-network/cChannel-eth#protocol-buffers-usage)
-* [Testnet](https://github.com/celer-network/cChannel-eth#testnet)
 * [Solidity Version](https://github.com/celer-network/cChannel-eth#solidity-version)
 * [Code Structure](https://github.com/celer-network/cChannel-eth#code-structure)
 	* [contracts folder](https://github.com/celer-network/cChannel-eth#contracts-folder)
@@ -20,10 +18,6 @@ cChannel-eth is a collection of smart contracts acting as the binding of cChanne
 
 For more details about cChannel and Celer Network, please refer to [Celer Network's official website](https://www.celer.network/).
 
-## Work In Progress (WIP) Notice
-cChannel-eth is currently under active developments in our private repo. This public repo only acts as a showcase of periodically public updates.
-**This repo is not intended for production use and please DO NOT use the code in this repo with any real money, funds or assets.**
-
 ## Core Concepts
 * **Peers**: channel participants (only supports two-peer channel for now).
 * **Simplex Channel**: a single-direction payment channel from one peer to the other peer.
@@ -37,7 +31,7 @@ cChannel-eth is currently under active developments in our private repo. This pu
 * **Payment Destination**: the address receives a payment, namely the destination of this payment route.
 * **Vouched Conditional Payment Result**: the result of a conditional payment agreed by the payment source and payment destination.
 * **PayRegistry**: a global registry which updates and records all payment results.
-* **PayIdList**: data structure including a list of payment ids and a hash pointer to next PayIdList, which is used in Batch Multi-Payment Liquidation.
+* **PayIdList**: data structure including a list of payment ids and a hash pointer to next PayIdList, which is used in Batch Multi-Payment Clearing.
 * **EthPool**: A ETH wrapper to provide ERC20-like APIs for ETH.
 * **Virtual Address Resolver**: establishes the mapping from off-chain address to on-chain address.
 
@@ -60,7 +54,7 @@ cChannel-eth is currently under active developments in our private repo. This pu
 * **Cooperative Dynamic Withdraw**: skips challenge period and withdraws fund before channel finalized when both peers reach an agreement.
 * **Lightweight cooperative on-chain checkpoint**: support snapshotting transfer map of co-signed states on-chain.
 * **Batch Multi-Channel Settlements**: intends to settle multiple channels in one batch with a single on-chain transaction.
-* **Batch Multi-Payment Liquidation**: liquidates *N* payments in one batch with a single on-chain transaction using PayIdList, which only requires O(1) on-chain storage and O(*n*/*N*) on-chain verifications to liquidate *n* payments.
+* **Batch Multi-Payment Clearing**: clears *N* payments in one batch with a single on-chain transaction using PayIdList, which only requires O(1) on-chain storage and O(*n*/*N*) on-chain verifications to clear *n* payments.
 * **Cooperative Settle**: skips challenge period and settles a channel when both peers reach an agreement.
 
 ## Protocol Buffers Usage
@@ -71,20 +65,8 @@ We have also developed and open sourced a Solidity library generator of proto3 d
 
 Two proto3 files are used in cChannel-eth, `chain.proto` and `entity.proto`, which are stored in `lib/data/proto/`. `chain.proto` defines data structures only used in on-chain contracts, while `entity.proto` defines data structures used both in on-chain contracts and off-chain communication protocols.
 
-## Latest Deployments
-### Ropsten
-#### Celer Channel
-* Contract address: [0x66804e13b02d2d2d4174ae3b538bf968411bb6c1](https://ropsten.etherscan.io/address/0x66804e13b02d2d2d4174ae3b538bf968411bb6c1)
-* Deployed code: [CelerChannel.sol](https://github.com/celer-network/cChannel-eth/blob/v0.11.0/contracts/CelerChannel.sol)
-
-### Alpha Mainnet
-**ATTENTION**: this deployment is only for Alpha release testing. Please DO NOT deposit any real ETH, valuable tokens or funds into this version. Celer is not responsible for any loss.
-#### Celer Channel
-* Contract address: [0xa021fc97622f4259745c8604fb7f6e007a78d4f4](https://etherscan.io/address/0xa021fc97622f4259745c8604fb7f6e007a78d4f4)
-* Deployed code: [CelerChannel.sol](https://github.com/celer-network/cChannel-eth/blob/v0.11.0/contracts/CelerChannel.sol)
-
 ## Solidity Version
-Solidity `^0.5.0` or above is required to run cChannel-eth contracts.
+Solidity `^0.5.1` or above is required to run cChannel-eth contracts.
 
 ## Code Structure
 The following is the main code structure of cChannel-eth: