Let's remove non-decorator from list package

[victornoel]

In cactoos' collections classes, there is one one side iterable/iterator that provide iteration on collections of data, and on the other side the packages list, set, map and collection that concerns stateful data containers aka collections.

The current direction of Cactoos is to provide the maximum of functionality concerning iterable/iterator, and just the basic functionality concerning collections.

Let's remove from the list package the following classes: Sorted, Shuffled, Mapped.

Note that Joined will be transformed to a real lazy decorator in #1254. the map package will be taken care of via #1384, the set package is already ok and the collection package is just missing #1261.

[victornoel]

@0crat in

[victornoel]

@0crat assign @fabriciofx

[victornoel]

@fabriciofx I'm starting to assign manually because if not 0crat always assign latest issues and I would like to advance on those. I hope it's ok with you :) no rush anyway

[fabriciofx]

@victornoel right, no problem! :)

[0crat]

@0crat assign @fabriciofx (here)

@victornoel The job #1413 assigned to @fabriciofx/z, here is why; the budget is 30 minutes, see §4; please, read §8 and §9; if the task is not clear, read this and this; there will be no monetary reward for this job

[fabriciofx]

@victornoel How about list.Synced? Should I keep it?

[victornoel]

@fabriciofx yes, we should keep it because its functionality cannot be provided just by delegating to one of the iterable decorator.

[fabriciofx]

@victornoel right! Thanks!

[fabriciofx]

@victornoel Can you close this issue too?

[victornoel]

@fabriciofx yep, thx!

[0crat]

@sereshqua/z please review this job completed by @fabriciofx/z, as in §30; the job will be fully closed and all payments will be made when the quality review is completed

[sereshqua]

@0crat quality good