sparse-0.7: CHANGELOG.markdown

0.7
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* Switched to using an internal vector type that unboxes as much as it can. This lets type inference work much better when playing around at the ghci REPL.

0.6
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* Version bumped to exceed the # of Hans Hoglund's `sparse` package. He started and released his library during the creation of this library, but graciously offered to let me take over the name. His library is now on hackage as `sparser`.

0.1
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* Repository initialized.