Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Help improve ENiGMA½!
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the Bug**
+A clear and concise description of what the :bug: bug is.
+
+**To Reproduce**
+Any relevant steps to reproduce the behavior:
+
+**Expected Behavior**
+A clear and concise description of what you expected to happen.
+
+**Actual Behavior**
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Environment**
+* [ ] I am using Node.js v12.x LTS or higher
+* [ ] `npm install` or `yarn` reports success
+* Actual Node.js version (`node --version`):
+* Operating system (`uname -a` on *nix systems):
+* Revision (`git rev-parse --short HEAD`):
+* Any additional relevant information about your setup