T-Digest weights are now long long

[codecov[bot]]

Codecov Report

Base: 82.07% // Head: 81.74% // Decreases project coverage by -0.32% :warning:

Coverage data is based on head (2329577) compared to base (be956a8). Patch coverage: 84.84% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #29 +/- ## ========================================== - Coverage 82.07% 81.74% -0.33% ========================================== Files 1 1 Lines 357 367 +10 ========================================== + Hits 293 300 +7 - Misses 64 67 +3 ``` | [Impacted Files](https://codecov.io/gh/RedisBloom/t-digest-c/pull/29?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=RedisBloom) | Coverage Δ | | |---|---|---| | [src/tdigest.c](https://codecov.io/gh/RedisBloom/t-digest-c/pull/29/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=RedisBloom#diff-c3JjL3RkaWdlc3QuYw==) | `81.74% <84.84%> (-0.33%)` | :arrow_down: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=RedisBloom). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=RedisBloom)

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