Added templates.

.github/ISSUE_TEMPLATE.md

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+### Prerequisites
+
+* [ ] Are you running the latest version?
+* [ ] Did you check for an existing issue ?
+* [ ] Are you reporting to the correct repository?
+* [ ] Did you perform a cursory search?
+* [ ] Did you read the `CONTRIBUTING` guide ?
+
+### Description
+
+[Description of the bug or feature]
+
+### Steps to Reproduce
+
+1. [First Step]
+2. [Second Step]
+3. [and so on...]
+
+**Expected behavior:** [What you expected to happen]
+
+**Actual behavior:** [What actually happened]
+
+
+### Screenshots (optional)
+
+`...`
+
+### Device
+
+- Device (manufacturer, model ...)
+- OS (Android Version, ROM/Stock, Rooted/not, mods...)
+- App version _(See Prerequisites)_

.github/PULL_REQUEST_TEMPLATE.md

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+## Types of changes
+
+- [ ] I have read the **CONTRIBUTING** document.
+- [ ] My code follows the code style of this project.
+- [ ] I have updated the documentation accordingly.
+- [ ] I have added tests to cover my changes.
+- [ ] All new and existing tests passed.
+
+This closes issue #XXX
+
+This is implements feature #YYY
+
+This finishes chore #ZZZ