bsv is not in dependencies of the package

[kunitsyn]

Steps to reproduce:

• npm init (create a new project);
• npm add @moneybutton/paymail-client;
• create a JS file and write something like const { Tx } = require("@moneybutton/paymail-client");
• launch the JS file;
• fail:

internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'bsv'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> (B:\mar\paymailclient\node_modules\@moneybutton\brfc\dist\brfc.cjs.js:7:27)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! paymailclient@1.0.0 start: `node index.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the paymailclient@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\user\AppData\Roaming\npm-cache\_logs\2021-02-26T19_06_42_568Z-debug.log

The version of "@moneybutton/paymail-client" that I installed is "0.38.4".