doctrine/inflector stops Composer installation

[MCKLtech]

Summary

When installing via composer, the following error appears.

Code snippet that reproduces the problem

  - Installation request for loopline-systems/closeio-api-wrapper ^0.7.1 -> satisfiable by loopline-systems/closeio-api-wrapper[v0.7.1].
    - Conclusion: remove doctrine/inflector 2.0.3
    - Conclusion: don't install doctrine/inflector 2.0.3
    - loopline-systems/closeio-api-wrapper v0.7.1 requires doctrine/inflector ^1.0 -> satisfiable by doctrine/inflector[1.0.x-dev, 1.1.x-dev, 1.2.x-dev, 1.3.1, 1.3.x-dev, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.x-dev, v1.0, v1.0.1, v1.1.0, v1.2.0, v1.3.0].
    - Can only install one of: doctrine/inflector[1.1.x-dev, 2.0.3].
    - Can only install one of: doctrine/inflector[1.2.x-dev, 2.0.3].
    - Can only install one of: doctrine/inflector[1.3.1, 2.0.3].
    - Can only install one of: doctrine/inflector[1.3.x-dev, 2.0.3].
    - Can only install one of: doctrine/inflector[1.4.0, 2.0.3].
    - Can only install one of: doctrine/inflector[1.4.1, 2.0.3].
    - Can only install one of: doctrine/inflector[1.4.2, 2.0.3].
    - Can only install one of: doctrine/inflector[1.4.3, 2.0.3].
    - Can only install one of: doctrine/inflector[1.4.x-dev, 2.0.3].
    - Can only install one of: doctrine/inflector[v1.1.0, 2.0.3].
    - Can only install one of: doctrine/inflector[v1.2.0, 2.0.3].
    - Can only install one of: doctrine/inflector[v1.3.0, 2.0.3].
    - Can only install one of: doctrine/inflector[1.0.x-dev, 2.0.3].
    - Can only install one of: doctrine/inflector[v1.0, 2.0.3].
    - Can only install one of: doctrine/inflector[v1.0.1, 2.0.3].
    - Installation request for doctrine/inflector (locked at 2.0.3) -> satisfiable by doctrine/inflector[2.0.3].