Installation error with symfony 4

[jo66]

Install fails, seems because of symfony version:

jo66@PC1:~/www/bizbox$ composer require aboutcoders/scheduler-bundle
Using version ^1.2 for aboutcoders/scheduler-bundle
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Restricting packages listed in "symfony/symfony" to "4.2.*"
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - aboutcoders/scheduler-bundle 1.2.2 requires symfony/symfony ~2.6|~3.0 -> no matching package found.
    - aboutcoders/scheduler-bundle 1.2.1 requires symfony/symfony ~2.6|~3.0 -> no matching package found.
    - aboutcoders/scheduler-bundle 1.2.0 requires symfony/symfony ~2.6|~3.0 -> no matching package found.
    - Installation request for aboutcoders/scheduler-bundle ^1.2 -> satisfiable by aboutcoders/scheduler-bundle[1.2.0, 1.2.1, 1.2.2].

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your minimum-stability setting
   see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.
 - It's a private package and you forgot to add a custom repository to find it

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.

Installation failed, reverting ./composer.json to its original content.

[hasc]

We haven't yet upgraded the bundle to support symfony 4.*. Not yet sure when we'll find the time to do so. Would you be willing to support us on this?

[jo66]

Not sure I can find the time too.
Not sure I am the good person as I am new to SF and worked only with version 4, so I am far to understand what this upgrade means.
And in addition I decided to change my logic not to need so much processes...
But I hope you or someone will find time, seems great bundle, thanks to share!