Fix ionic css deprecation

dist/ionic4-datepicker/LICENSE

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+The MIT License
+
+Copyright Logistic Infotech
+
+This software consists of voluntary contributions made by many
+individuals. For exact contribution history, see the revision history
+available at https://github.com/logisticinfotech/ionic4-datepicker
+
+The following license applies to all parts of this software except as
+documented below:
+
+====
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+====
+
+Copyright and related rights for sample code are waived via CC0. Sample
+code is defined as all source code displayed within the prose of the
+documentation.
+
+CC0: http://creativecommons.org/publicdomain/zero/1.0/
+
+====
+
+Files located in the node_modules and vendor directories are externally
+maintained libraries used by this software which have their own
+licenses; we recommend you read them, as their terms may differ from the
+terms above.

dist/ionic4-datepicker/README.md

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+
+# Ionic4 DatePicker
+
+Please check this blog for documentation [this link](https://www.logisticinfotech.com/blog/ionic4-datepicker-component)
+
+Here is how it looks
+
+![Ionic4-Datepicker Gif](https://www.logisticinfotech.com/wp-content/uploads/2018/12/ionic4-datepicker.gif)
+
+# Breaking change in version 1.0.8
+Due to issue in date formate `dd-MM-yyyy`, we have used momentjs to solve it.
+We are moving away from angular DatePipe so now only [momentjs date formates](https://momentjs.com/docs/) are valid.
+
+so people who are using `dd` will require change it to `DD`
+
+## Credits to
+rajeshwar patlolla's Ionic1 Datepicker