Bug fixes and general improvements

[MarwanAlsoltany]

Pull Request Template

Please include a summary of the change and which issue is fixed. List any dependencies that are required for this change.

Motivation and Context

Why is this change required? What problem does it solve?

If it fixes an open issue, please link to the issue here (if you write Fixes #number
or Closes #number, the issue will be automatically closed when the pull is accepted).

Types of Changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to change).
• This change requires a documentation update.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration.

• Test A
• Test B

Screenshots (if appropriate)

Checklist:

Go over all the following points, and put an x in all the boxes that apply.

Please, don't send your pull request until all of the boxes are ticked. Once your pull request is created, it will trigger a build on our continuous integration server to make sure your tests and code style pass.

• I have read the CONTRIBUTING document.
• I have created a branch for this patch/feature.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made sure that my code follows the style guidelines of this project.
• I have added tests to cover my changes that prove my fix is effective or that my feature works.
• My changes generate no new warnings.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.
• If my change requires a change to the documentation, I have updated it accordingly.

If you're unsure about any of these, don't hesitate to ask.

[codecov-commenter]

Codecov Report

Base: 99.96% // Head: 99.96% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (78aea98) compared to base (ae246f1).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##             master       #1   +/-   ##
=========================================
  Coverage     99.96%   99.96%           
- Complexity      367      370    +3     
=========================================
  Files            43       43           
  Lines          3230     3234    +4     
=========================================
+ Hits           3229     3233    +4     
  Misses            1        1           

Flag	Coverage Δ
unittests	99.96% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/Rule.php	100.00% <100.00%> (ø)
src/Validation/Constraint/Shape.php	100.00% <100.00%> (ø)
src/Validation/Logic/rules/condition.php	100.00% <100.00%> (ø)
src/Validation/Logic/rules/filter.php	100.00% <100.00%> (ø)

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