Add array builder instead of buffer and specialization.
Replace with tabulate.
Reformat.
Update sbt version.
Update heap size.
Update sbt-jmh version
Enabled tiered compilation.
Add optimization flags.
Update settings.
Source code to reproduce miniboxed stream numbers

The only significant change is the addition of the Numeric trait
that is required for obtaining the best performance (it cuts down
the benchmark time by 50-100%). The rest is just the same source
code, modulo some whitespace my editor f'd up.

The Numeric issue is tracked here:
https://github.com/miniboxing/miniboxing-plugin/issues/154

And the numbers I got were:
```
[info] Benchmark                                        Mode  Samples    Score     Error  Units
[info] b.StreamsBenchmarks.baseline_cart                avgt        5    5.931 ±   3.828  ms/op
[info] b.StreamsBenchmarks.baseline_ref                 avgt        5   39.861 ±   8.073  ms/op
[info] b.StreamsBenchmarks.baseline_sum                 avgt        5    7.577 ±   3.460  ms/op
[info] b.StreamsBenchmarks.baseline_sumOfSquares        avgt        5    8.385 ±   2.146  ms/op
[info] b.StreamsBenchmarks.baseline_sumOfSquaresEven    avgt        5   16.549 ±   6.565  ms/op
[info] b.StreamsBenchmarks.streams_cart                 avgt        5   64.212 ±  15.141  ms/op
[info] b.StreamsBenchmarks.streams_ref                  avgt        5   64.660 ±   2.339  ms/op
[info] b.StreamsBenchmarks.streams_sum                  avgt        5   12.628 ±   2.238  ms/op
[info] b.StreamsBenchmarks.streams_sumOfSquares         avgt        5   13.332 ±   0.478  ms/op
[info] b.StreamsBenchmarks.streams_sumOfSquaresEven     avgt        5   48.973 ±   2.852  ms/op
[info] b.StreamsBenchmarks.views_cart                   avgt        5  256.326 ±  48.221  ms/op
[info] b.StreamsBenchmarks.views_ref                    avgt        5  160.198 ±  15.765  ms/op
[info] b.StreamsBenchmarks.views_sum                    avgt        5   83.606 ±  13.433  ms/op
[info] b.StreamsBenchmarks.views_sumOfSquares           avgt        5  188.036 ±  10.412  ms/op
[info] b.StreamsBenchmarks.views_sumOfSquaresEven       avgt        5  236.694 ± 101.736  ms/op
```