Consider moving to BetterReflection

[juliusknorr]

https://github.com/phpDocumentor/Reflection is still quite unstable (as this repo uses the dev branch atm), so moving to https://github.com/Roave/BetterReflection probably makes sense, as that looks far more stable and maintained.

[wapmorgan]

This seems outdated:

composer require juliushaertl/phpdoc-to-rst:dev-master
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - juliushaertl/phpdoc-to-rst dev-master requires phpdocumentor/reflection dev-develop -> satisfiable by phpdocumentor/reflection[dev-develop].
    - Installation request for juliushaertl/phpdoc-to-rst dev-master -> satisfiable by juliushaertl/phpdoc-to-rst[dev-master].
    - Conclusion: remove phpdocumentor/reflection-docblock 4.3.0
    - Conclusion: don't install phpdocumentor/reflection-docblock 4.3.0
    - phpdocumentor/reflection dev-develop requires phpdocumentor/reflection-docblock ^5 -> satisfiable by phpdocumentor/reflection-docblock[5.0.0-alpha1, 5.0.0-alpha2, 5.0.0-alpha3, 5.x-dev].
    - Can only install one of: phpdocumentor/reflection-docblock[5.0.0-alpha1, 4.3.0].
    - Can only install one of: phpdocumentor/reflection-docblock[5.0.0-alpha2, 4.3.0].
    - Can only install one of: phpdocumentor/reflection-docblock[5.0.0-alpha3, 4.3.0].
    - Can only install one of: phpdocumentor/reflection-docblock[5.x-dev, 4.3.0].
    - Installation request for phpdocumentor/reflection-docblock (locked at 4.3.0) -> satisfiable by phpdocumentor/reflection-docblock[4.3.0].


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