Sqlmath

- electron: Electron v8, v8.1.x & v8.2.x [1294](https://github.com/mapbox/node-sqlite3/pull/1294) [#1308](https://github.com/mapbox/node-sqlite3/pull/1308)
- sqlite3: update to 3.31.1 (3310100) [1289](https://github.com/mapbox/node-sqlite3/pull/1289)
- webpack: split sqlite3-binding.js out so that it could be override by webpack [1268](https://github.com/mapbox/node-sqlite3/pull/1268)
- sqlite3: enable 'SQLITE_ENABLE_DBSTAT_VTAB=1' [1281](https://github.com/mapbox/node-sqlite3/pull/1281)
- deps: remove request [1287](https://github.com/mapbox/node-sqlite3/pull/1287)
- deps: alternative update of node-gyp for electron (v1 - v4), windows [1283](https://github.com/mapbox/node-sqlite3/pull/1283)
- electron: fix dist url [1282](https://github.com/mapbox/node-sqlite3/pull/1282)
- docs: Added json1 support note [1303](https://github.com/mapbox/node-sqlite3/pull/1303)

- Electron v6.1 and v7 support [1237](https://github.com/mapbox/node-sqlite3/pull/1237)
- Electron v7.1 support [1254](https://github.com/mapbox/node-sqlite3/pull/1254)
- SQLite3 update to 3.30.1 [1238](https://github.com/mapbox/node-sqlite3/pull/1238)
- Overwrite 'msbuild_toolset' only if 'toolset' is defined [1242](https://github.com/mapbox/node-sqlite3/pull/1242)
- Upgrade CI to node-gyp 6.x for Windows Electron v5 & v6 builds [1245](https://github.com/mapbox/node-sqlite3/pull/1245)
- Node v13 support [1247](https://github.com/mapbox/node-sqlite3/pull/1247)
- Use minimum supported node version for Electron 7 [1255](https://github.com/mapbox/node-sqlite3/pull/1255)

- Electron v6 support [1195](https://github.com/mapbox/node-sqlite3/pull/1195)
- Electron v4.1 and v4.2 support [1180](https://github.com/mapbox/node-sqlite3/pull/1180)
- Custom file header with `--sqlite_magic` [1144](https://github.com/mapbox/node-sqlite3/pull/1144)
- https everywhere [1177](https://github.com/mapbox/node-sqlite3/pull/1177)

- Use trusty as the base for prebuilts [1167](https://github.com/mapbox/node-sqlite3/pull/1167)

- Rerelease of 4.0.7 but removed excess .vscode files [0df90c7](https://github.com/mapbox/node-sqlite3/commit/0df90c7811331169ad5f8fbad396422e72757af3)

- Node v12 support
- Electron v5 support
- Fix backup API tests
- HAVE_USLEEP=1 for all platforms
- docker suport