Update dependencies

[fdietze]

We still have to wait for algebra to be ported to cats 1.0: https://github.com/typelevel/algebra/pull/207

[codecov-io]

Codecov Report

Merging #7 into master will decrease coverage by 97.86%. The diff coverage is 0%.

@@           Coverage Diff            @@
##           master    #7       +/-   ##
========================================
- Coverage   97.86%    0%   -97.87%     
========================================
  Files          19    14        -5     
  Lines         892   788      -104     
  Branches       68    69        +1     
========================================
- Hits          873     0      -873     
- Misses         19   788      +769

Impacted Files	Coverage Δ
core/src/main/scala/com/rklaehn/abc/ArraySet.scala	0% <0%> (-100%)	:arrow_down:
...main/scala/com/rklaehn/abc/NegatableArraySet.scala	0% <0%> (-100%)	:arrow_down:
core/src/main/scala/com/rklaehn/abc/ArrayMap.scala	0% <0%> (-100%)	:arrow_down:
...e/src/main/scala/com/rklaehn/abc/BinaryMerge.scala	0% <0%> (-100%)	:arrow_down:
core/src/main/scala/com/rklaehn/abc/SetUtils.scala	0% <0%> (-100%)	:arrow_down:
...ore/src/main/scala/com/rklaehn/abc/ArrayUtil.scala	0% <0%> (-100%)	:arrow_down:
core/src/main/scala/com/rklaehn/abc/Hash.scala	0% <0%> (-100%)	:arrow_down:
...ore/src/main/scala/com/rklaehn/abc/Universal.scala	0% <0%> (-100%)	:arrow_down:
...ore/src/main/scala/com/rklaehn/abc/Searching.scala	0% <0%> (-100%)	:arrow_down:
core/src/main/scala/com/rklaehn/abc/ArraySeq.scala	0% <0%> (-100%)	:arrow_down:
... and 10 more

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[fdietze]

A new version of algebra has been released. So I updated the dependencies again. I'm not sure how to solve the remaining compile error though:

[error] /home/travis/build/rklaehn/abc/core/src/main/scala/com/rklaehn/abc/Hash.scala:17: method on overrides nothing
[error]   override def on[@sp B](f: B => A): Hash[B] =
[error]                ^

[fdietze]

Any ideas?