Use a more familiar verifier API

[cyberdelia]

A change in a similar fashion as the builders one, but for verifiers.

MacaroonsVerifier verifier = macaroon.verifier();
verifier.satisfy("account = 3735928559");

A more subtle change is also hiding here, by using List rather Array where there is no advantages in using Array (which is in holding primitive types).

[codecov-commenter]

Codecov Report

Merging #37 (9765a47) into master (aaa50a4) will decrease coverage by 0.24%. The diff coverage is 70.00%.

@@             Coverage Diff              @@
##             master      #37      +/-   ##
============================================
- Coverage     65.16%   64.92%   -0.25%     
+ Complexity      241      237       -4     
============================================
  Files            25       25              
  Lines          1289     1280       -9     
  Branches        179      177       -2     
============================================
- Hits            840      831       -9     
- Misses          352      355       +3     
+ Partials         97       94       -3     

Impacted Files	Coverage Δ
...m/github/nitram509/jmacaroons/util/ArrayTools.java	88.23% <ø> (+4.36%)	:arrow_up:
...9/jmacaroons/verifier/TimestampCaveatVerifier.java	88.88% <ø> (ø)
...github/nitram509/jmacaroons/MacaroonsVerifier.java	78.57% <66.66%> (-2.28%)	:arrow_down:
...java/com/github/nitram509/jmacaroons/Macaroon.java	70.17% <100.00%> (+0.53%)	:arrow_up:

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[nitram509]

Thank you very much for your contibution. I will have a look at this PR soon.