Missing style file

[maxdef88]

Describe the bug
Missing .scss files into packaged lib.

To Reproduce
Steps to reproduce the behavior:

1. npm i material-community-components@13
2. Open node_modules/material-community-components/_theming.scss
3. The file use timer-picker/timer-picker-theme and speed-dial/speed-dial-theme but this files don't exist
4. See error when follow instruction for theming

Expected behavior

We need the required file into the packaged lib

Screenshots

SassError: Can't find stylesheet to import.
  ╷
1 │ @use 'timer-picker/timer-picker-theme' as timer-picker;
  │ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  ╵
  node_modules/material-community-components/_theming.scss 1:1  @use
  src/styles.scss 6:1                                           root stylesheet

./src/styles.scss - Error: Module build failed (from ./node_modules/@angular-devkit/build-angular/node_modules/mini-css-extract-plugin/dist/loader.js):
HookWebpackError: Module build failed (from ./node_modules/@angular-devkit/build-angular/node_modules/sass-loader/dist/cjs.js):

Desktop (please complete the following information):

• npm: 6.14.11