Configure all signing params for automated release.

[artem-zinnatullin]

Ok, I've double-checked everything locally (no daemons, no properties, etc), but on macOS.

Turned out that even signing.secretKeyRingFile is required, I thought signing plugin can figure this automatically…

[codecov-io]

Codecov Report

Merging #841 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #841   +/-   ##
=========================================
  Coverage     97.41%   97.41%           
  Complexity      791      791           
=========================================
  Files            91       91           
  Lines          2707     2707           
  Branches        305      305           
=========================================
  Hits           2637     2637           
  Misses           38       38           
  Partials         32       32

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[artem-zinnatullin]

Travis is flucking impossible, now release just overflows logs because Travis does unconditional ./gradlew assemble (because you know, we use Gradle, why not), then runs regular build and only then runs release…

The log length has exceeded the limit of 4 MB (this usually means that the test suite is raising the same exception over and over).

The job has been terminated

ajakdljalrheoirh034ru09jaaoida
*angry