Add 0.7.0 to the changelog

[ci integration]

Merge pull request raiden-network#2265 from palango/release

Release 0.6

Merge pull request raiden-network#2209 from ulope/release/0.5.1

Bump version: 0.5.0 → 0.5.1

Add changelog entry for 2149

Check that total_deposit is not None

Bump version: 0.4.0 → 0.4.1

Fix travis deployment

Raiden v0.3.0 -- The Swimming Goat

This is another snapshot release of the Raiden Network on top of the Developer Preview.

There have been 219 commits since the last release and 9 external contributors helped in shaping this release.

- Unless specifically provided gas price and gas limit are now dynamically calculated from the `eth_gasPrice()` and latest blocks limit respectively. (raiden-network#1230)
- Update raiden to use Python 3 and the latest version of pyethereum. (raiden-network#87)
- Added macOS compatibility and binary releases. (raiden-network#1015)
- Reconnect raiden to ethereum node after disconnect. (raiden-network#1093)
- Added `--gas-price` command line option. (raiden-network#1097)
- Introduce an upper limit for the `settle_timeout` attribute of the netting channel. (raiden-network#1038)
- Making python's channels crash resilient (recoverable). Note, this is a breaking change, the serialization format of channel objects changed to a WAL compatible representation. (raiden-network#507)
- Add `show_default` to CLI options. (raiden-network#1037)
- Block raiden startup until ethereum node is fully synchronized. (raiden-network#670)
- Add `amount` and `target` to `EventTransferSentSuccess` event. (raiden-network#1010)
- Include an `errors` field in all unsuccessful API responses. (raiden-network#1022)
- Add `/api/1/connection` API endpoint returning information about all connected token networks. (raiden-network#921)

- Don't crash when using the `--nat=ext:IP` command line option. (raiden-network#1274)
- Correctly decode network events in the REST API. (raiden-network#1217)
- Fix internal server error on REST endpoint `/events/tokens/` for non-existing tokens. (raiden-network#1224)
- REST API now returns json error for invalid endpoints. (raiden-network#1261)
- REST and Python API close did not work if a transfer was made. (raiden-network#1138)
- Rename `/connection` API endpoint to `/connections` for consistency. (raiden-network#1044)
- Make raiden byzantium compatible by no longer relying on `estimateGas`. (raiden-network#1049)
- Removed `block_number` from contracts events, using block_number from block on which it was mined. (raiden-network#450)
- User selectable NAT traversal. (raiden-network#870)
- Remove `settled` attribute from the NettingChannel smart contract. (raiden-network#1011)

Raiden v0.2.0

Release v0.1.0 - Raiden Developer Preview