Peerjs

- fixed issues 800, 803 in PR 806, thanks jordanaustin
- updated devDeps: `typescript` to 4.2

<a name="1.3.1"></a>

- fixed: map file resolving
- removed: types/webrtc because it contains in ts dom lib.

<a name="1.3.0"></a>

- changed: don't close the Connection if `iceConnectionState` changed to `disconnected`

<a name="1.2.0"></a>

- added: ability to change json stringify / json parse methods for DataConnection 592

- removed: `peerBrowser` field from `dataConnection` because unused

- fixed: lastServerId and reconnect 580 534 265

<a name="1.1.0"></a>

- removed: deprecated `RtpDataChannels` and `DtlsSrtpKeyAgreement` options
- removed: grunt from deps, upgrade deps versions
- removed: Reliable dep because modern browsers supports `RTCDataChannel.ordered` property

- added: TURN server to default config

- fixed: emit error message, then destory/disconnect when error occured
- fixed: use `peerjs-js-binarypack` instead of `js-binarypack`
- fixed: sending large files via DataConnection 121

<a name="1.0.4"></a>

- fixed: 'close' event for DataConnection 568

<a name="1.0.3"></a>