Moment.js 2.25.0

* Release May 1, 2020 * [#4611](https://github.com/moment/moment/issues/4611) [022dc038](https://github.com/moment/moment/commit/022dc038) [feature] Support for strict string parsing, fixes [#2469](https://github.com/moment/moment/issues/2469) * [#4599](https://github.com/moment/moment/issues/4599) [4b615b9d](https://github.com/moment/moment/commit/4b615b9d) [feature] Add support for eras in en and jp * [#4296](https://github.com/moment/moment/issues/4296) [757d4ff8](https://github.com/moment/moment/commit/757d4ff8) [feature] Accept custom relative thresholds in duration.humanize * 18 bigfixes * 36 locale fixes * 5 new locales (oc-lnc, zh-mo, en-in, gom-deva, fil)