Release 1.0.0: First productive version

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This release is required for the first application based on the library.
## Release 1.0.0: First productive version * [Stories and bugs](https://github.com/ArnaudBuchholz/gpf-js/milestone/18?closed=1) implemented * [Sources](https://github.com/ArnaudBuchholz/gpf-js/tree/v1.0.0) * [Documentation](https://arnaudbuchholz.github.io/gpf/doc/index.html) * [NPM package](https://www.npmjs.com/package/gpf-js) ## Release content ### Bug fixes This release took a long time to mature but, in the end, does not contain much. I already mentionned in the last releases that I am working on a side project. It's been a while. This development revealed many problems in the library that were addressed in different releases (such as the [support of ES6](http://gpf-js.blogspot.com/2019/03/release-029-es6-support.html)). Because the pressure increased, the focus completely shifted to this project on the last months and several little bugs were fixed during that time. Now that the project is ready for production, an 'official' release of thoses bug fixes is required. Finally, it also validates the use of the library in a productive environment. ## Next release The [next release content](https://github.com/ArnaudBuchholz/gpf-js/milestone/19) *may be* about performances. Several other projects requiring my attention, the library might be put on the back burner for a while.