Deedle 2.0.0

Breaking changes of Stats.min and Stats.max [#422](https://github.com/fslaborg/Deedle/pull/422) Inline stats functions [#418](https://github.com/fslaborg/Deedle/pull/418) Fix error handling of group by column when dealing with missing value [253](https://github.com/fslaborg/Deedle/pull/405) and [380](https://github.com/fslaborg/Deedle/pull/380) Fix aggregateRowsBy with missing value [375](https://github.com/fslaborg/Deedle/pull/408) Fix format function [#416](https://github.com/fslaborg/Deedle/pull/416) Fix arithmetic operator on frames [#432](https://github.com/fslaborg/Deedle/pull/434) Fix wrong exception for empty Series [#365](https://github.com/fslaborg/Deedle/pull/437) Fix tryLastValue using tryGetAt [#339](https://github.com/fslaborg/Deedle/pull/438) Fix bug in ReadCsv missingValues parameters [#439](https://github.com/fslaborg/Deedle/pull/440) Fix handling of missing column keys in case when inferTypes is false [#63](https://github.com/fslaborg/Deedle/pull/450) Add Frame.dropSparseRowsBy [#404](https://github.com/fslaborg/Deedle/pull/404) Add Series.intersect [#407](https://github.com/fslaborg/Deedle/pull/407) Add Series.compare [#411](https://github.com/fslaborg/Deedle/pull/411) Add Series.uniqueCount [#413](https://github.com/fslaborg/Deedle/pull/413) Add Series.describe [#414](https://github.com/fslaborg/Deedle/pull/414) and [$422](https://github.com/fslaborg/Deedle/pull/442) Add Series.replace [#427](https://github.com/fslaborg/Deedle/pull/427) Add Stats.quantile for series [#428](https://github.com/fslaborg/Deedle/pull/428) Add Frame.slice [#445](https://github.com/fslaborg/Deedle/pull/445) Removed compiler warning from ReadCsv [#426](https://github.com/fslaborg/Deedle/pull/426) Rename stack/unstack to melt/unmelt [#436](https://github.com/fslaborg/Deedle/pull/436)