[Snyk] Security upgrade mistune from 0.8.4 to 2.0.3

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `pip` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • docs/requirements.txt

⚠️ Warning

m2r2 0.3.2 has requirement mistune==0.8.4, but you have mistune 2.0.3.
beautifulsoup4 4.9.3 requires soupsieve, which is not installed.

Vulnerabilities that will be fixed

By pinning:

Severity	Issue	Upgrade	Breaking Change	Exploit Maturity
	Regular Expression Denial of Service (ReDoS) SNYK-PYTHON-MISTUNE-2940625	mistune: 0.8.4 -> 2.0.3	No	No Known Exploit

Some vulnerabilities couldn't be fully fixed and so Snyk will still find them when the project is tested again. This may be because the vulnerability existed within more than one direct dependency, but not all of the effected dependencies could be upgraded.

Check the changes in this PR to ensure they won't cause issues with your project.

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information:
🧐 View latest project report

🛠 Adjust project settings

📚 Read more about Snyk's upgrade and patch logic

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Learn about vulnerability in an interactive lesson of Snyk Learn.

[coveralls]

Pull Request Test Coverage Report for Build 2687336621

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.465%

---

Totals
Change from base Build 2687335070:	0.0%
Covered Lines:	1263
Relevant Lines:	1323

---

💛 - Coveralls