Apply source scope by default in any loader

[tntrex]

No description provided.

[codecov]

Codecov Report

Merging #191 (55d7978) into master (fc7ead8) will decrease coverage by 0.09%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #191      +/-   ##
============================================
- Coverage     94.48%   94.39%   -0.10%     
+ Complexity      937      936       -1     
============================================
  Files            81       81              
  Lines          2413     2409       -4     
============================================
- Hits           2280     2274       -6     
- Misses          133      135       +2     

Impacted Files	Coverage Δ
src/Relation/Pivoted/PivotedPromise.php	89.36% <ø> (-0.23%)	⬇️
src/Select/JoinableLoader.php	87.64% <ø> (-2.36%)	⬇️
src/Select/RootLoader.php	100.00% <ø> (ø)
src/ORM.php	94.73% <100.00%> (-0.12%)	⬇️
src/Select/AbstractLoader.php	88.09% <100.00%> (+0.14%)	⬆️
src/Select/QueryBuilder.php	92.04% <100.00%> (ø)

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[wolfy-j]

Please explain what usecase is covered by this change?

https://github.com/cycle/orm/blob/master/src/Factory.php#L177 Scopes were attached by default at source level - so all repositories were reading them correctly. Select was created without a scope on purpose.

[tntrex]

Please explain what usecase is covered by this change?

I thought this more clear way to define scope on any loader, not just joinable. May be I get it wrong, but what is the purpose to not attach scope to select?