bug #170 Remove composer.lock until we have a first release (fabpot)

This PR was merged into the main branch.

Discussion
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Remove composer.lock until we have a first release

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Docs?         | no <!-- required for new features -->
| Issues        | Closes #169
| License       | MIT

Until we have a release, it's better to always get the latest version of the code.

Commits
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6b4ed7f Remove composer.lock until we have a first release

Author: chr-hertel