(#1434) Replace calls to Matchers with their OO counterparts

[baudoliver7]

For #1434 :

• Replace calls to Matchers for test package com.cactoos.io

[baudoliver7]

@andreoss Please, see my changes.

[baudoliver7]

@andreoss Please, see my changes.

[baudoliver7]

@victornoel Could you please check/merge ? @andreoss approved changes.

[victornoel]

@rultor merge

[rultor]

@rultor merge

@victornoel OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@victornoel Done! FYI, the full log is here (took me 9min)

[0crat]

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

[0crat]

Code review was too long (8 days), architects (@victornoel) were penalized, see §55

[sereshqua]

@andreoss please make sure you will find at least 3 issues during next CR, thanks

[sereshqua]

@0crat quality acceptable