Ton-client-py

- Binaries updated to `1.11.0`;
- Changes `1.9.0` (https://github.com/tonlabs/TON-SDK/blob/master/CHANGELOG.md#190-feb-19-2021)
- Changes `1.10.0` (https://github.com/tonlabs/TON-SDK/blob/master/CHANGELOG.md#1100--2021-03-04)
- Changes `1.11.0` (https://github.com/tonlabs/TON-SDK/blob/master/CHANGELOG.md#1110--2021-03-05)

- Binaries updated to `1.8.0`;
- Changes `1.6.0` (https://github.com/tonlabs/TON-SDK/blob/master/CHANGELOG.md#160-jan-29-2021)
- Changes `1.6.2` (https://github.com/tonlabs/TON-SDK/blob/master/CHANGELOG.md#162-feb-3-2021)
- Changes `1.6.3` (https://github.com/tonlabs/TON-SDK/blob/master/CHANGELOG.md#163-feb-4-2021)
- Changes `1.7.0` (https://github.com/tonlabs/TON-SDK/blob/master/CHANGELOG.md#170-feb-9-2021)
- Changes `1.8.0` (https://github.com/tonlabs/TON-SDK/blob/master/CHANGELOG.md#180-feb-11-2021)

- Binaries updated to `1.5.2`;
- `net` module functions wait for `net.resume` call instead of returning error if
called while the module is suspended.

- Binaries updated to `1.5.1`.
See https://github.com/tonlabs/TON-SDK/blob/master/CHANGELOG.md for details.

- `reconnect_timeout` parameter in `NetworkConfig`;
- `endpoints` parameter in `NetworkConfig`. It contains the list of available server
addresses to connect. SDK will use one them with the least connect time.
`server_address` parameter is still supported but endpoints is prevailing;
- `net.fetch_endpoints` function to receive available endpoints from the server;
- `net.set_endpoints` function to set endpoints list for using on next reconnect;
- `ErrorCode` type for each module. See `types.[MODULE]ErrorCode`.

- Core improvement: using `concurrent.future` along with `asyncio.future` for response
resolving