Translation-gummy

- Supported 2 journals:
- [EMBOPressCrawler](https://www.embopress.org/)
- [ASPBCrawler](http://www.plantphysiol.org/)
- Published pdf template in documentation ([`gummy.utils.templates` module](https://iwasakishuto.github.io/Translation-Gummy/gummy.utils.templates.html))

- Arranged the design:
- Changed the title tag from `<h1>` to `<span>` so that toc can be used effectively.
- Add `subheadTags` to all journals. (`gummy.journals.py`)
- Remove `<summary>`,`<detail>` tag from `README.md`
- make `>>>` in code not be copied in documentation.
- Remove extra `Go to:` in NCBI paper.

- Supported 6 journals:
- [ARVOJournals](https://iovs.arvojournals.org/)
- [LearningMemory](https://learnmem.cshlp.org/)
- [ScienceMag](https://science.sciencemag.org/)
- [PsyChiArtist](https://www.psychiatrist.com/)
- [Oncotarget](https://www.oncotarget.com/)
- [ClinicalEndoscopy](https://www.e-ce.org/)
- Organized the code and created the documentation: https://iwasakishuto.github.io/Translation-Gummy/index.html

- Supported 2 journals:
- [NEJM](https://www.nejm.org/) (with `UTokyoGateWay`)
- [LWWJournals](https://journals.lww.com/pages/default.aspx)
- Fixed some bugs
- A bug which occurs when you specify the filename of the output PDF (`model.toPDF(path="sample.pdf")`)

- Supported the [AGUPublications](https://agupubs.onlinelibrary.wiley.com/).
- Renamed 2 Crawlers name
- `ACSCrawler` -> `ACSPublicationsCrawler`
- `RSCCrawler` -> `RSCPublishingCrawler`
- Open HTML with encoding='utf-8'. (`gummy.utils.outfmt_utils.py`)
- Prevented uploaded PDF from being saved temporarily.

Resolved an error which occurs when arg `string` in `gummy.utils.generic_utils:str_strip` is not str type.