deno 1.5.1 isolatedModules breaking change

[Muhammad Valian Masdani]

Hi, Deno 1.5.1 has a breaking change which outputs error in compilation if isolatedModules: false is not provided in tsconfig.json while compiling the example in readme

error: TS1205 [ERROR]: Re-exporting a type when the '--isolatedModules' flag is provided requires using 'export type'.
  Deferred,
  ~~~~~~~~
    at https://deno.land/x/mysql@2.1.0/deps.ts:3:3

TS1205 [ERROR]: Re-exporting a type when the '--isolatedModules' flag is provided requires using 'export type'.
export { Client, ClientConfig } from "./src/client.ts";
                 ~~~~~~~~~~~~
    at https://deno.land/x/mysql@2.1.0/mod.ts:1:18

TS1205 [ERROR]: Re-exporting a type when the '--isolatedModules' flag is provided requires using 'export type'.
  ClientConfig,
  ~~~~~~~~~~~~
    at https://deno.land/x/dso@v1.0.0/deps.ts:8:3

TS1205 [ERROR]: Re-exporting a type when the '--isolatedModules' flag is provided requires using 'export type'.
  ClientConfig,
  ~~~~~~~~~~~~
    at https://deno.land/x/dso@v1.0.0/mod.ts:3:3

TS1205 [ERROR]: Re-exporting a type when the '--isolatedModules' flag is provided requires using 'export type'.
export { LogLevels, LevelName } from "./levels.ts";
                    ~~~~~~~~~
    at https://deno.land/std@0.61.0/log/mod.ts:13:21

Found 5 errors.

I'll send a PR of the new tsconfig.json in readme and in the root dir if needed

[EnokMan]

plz

[Muhammad Valian Masdani]

done #37