add news.md

NEWS.md

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 # butterfly 1.0.0
 
-* Initial CRAN submission.
+* Initial release:
+
+  * `butterfly::loupe()` - examines in detail whether previous values have changed, and returns TRUE/FALSE for no change/change.
+  * `butterfly::catch()` - returns rows which contain previously changed values in a dataframe.
+  * `butterfly::release()` - drops rows which contain previously changed values, and returns a dataframe containing new and unchanged rows.
+  * `butterfly::create_object_list()` - returns a list of objects required by all of `loupe()`, `catch()` and `release()`. Contains underlying functionality.
+  * `butterflycount` - a list of monthly dataframes, which contain fictional butterfly counts for a given date.