Add static cache for edd_get_option()

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: type-bug, workflow-pending-triage,  workflow-needs-replication
+assignees: ''
+
+---
+
+## Bug Report
+### Expected behavior
+When I do X, I expect Y to happen.
+
+### Actual behavior
+When I do X, Z happens.
+
+### Steps to reproduce the behavior
+1)
+2)
+3)
+etc, etc
+
+### Information (if a specific version is affected):
+PHP Version:
+
+EDD Version (or branch):
+
+WordPress Version:
+
+Any other relevant information:

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: type-request, workflow-pending-triage
+assignees: 'cklosowski'
+
+---
+
+## Enhancement Request
+### Explain your enhancement (please be detailed)
+
+### Justification or use case

.github/issue_template.md

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+# Instructions (START):
+The purpose of this template is to standardize GitHub issues for bug reports and enhancement requests. Please follow the instructions below.
+1. Determine whether your new issue is a "Bug Report" or "Enhancement Request."
+2. Based on your issue type, delete the unneeded template section below. For example, if you are submitting a bug report, find the entire "Enhancement Request" section of the template and delete it.
+3. Delete this entire block of instructions, from START to END, and fill out the sections to describe your reason for opening an issue.
+# Instructions (END):
+
+## Bug Report
+### Expected behavior
+When I do X, I expect Y to happen.
+
+### Actual behavior
+When I do X, Z happens.
+
+### Steps to reproduce the behavior
+1)
+2)
+3)
+etc, etc
+
+### Information (if a specific version is affected):
+PHP Version:
+
+EDD Version (or branch):
+
+WordPress Version:
+
+Any other relevant information:
+
+## Enhancement Request
+### Explain your enhancement (please be detailed)
+
+### Justification or use case

.github/pull_request_template.md

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+Fixes #
+
+Proposed Changes:
+1.
+2.
+3.
+
+_Please do not submit PRs with minified CSS or JS files. This is managed at the time of release by the Core Team_

CONTRIBUTING.md

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+## Contribute To Easy Digital Downloads
+
+Community made patches, localisations, bug reports and contributions are always welcome and are crucial to ensure Easy Digital Downloads remains the #1 eCommerce platform for digital goods on WordPress.
+
+When contributing please ensure you follow the guidelines below so that we can keep on top of things.
+
+__Please Note:__ GitHub is for bug reports and contributions only - if you have a support question or a request for a customization don't post here, go to our [Support page](https://easydigitaldownloads.com/support/) instead.
+
+## Getting Started
+
+* __Do not report potential security vulnerabilities here. Email them privately to our security team at [[email protected]](mailto:[email protected])__
+* Before submitting a ticket, please be sure to replicate the behavior with no other plugins active and on a base theme like Twenty Seventeen.
+* Submit a ticket for your issue, assuming one does not already exist.
+  * Raise it on our [Issue Tracker](https://github.com/easydigitaldownloads/Easy-Digital-Downloads/issues)
+  * Clearly describe the issue including steps to reproduce the bug.
+  * Make sure you fill in the earliest version that you know has the issue as well as the version of WordPress you're using.
+
+## Making Changes
+
+* Fork the repository on GitHub
+* Make the changes to your forked repository
+  * Ensure you stick to the [WordPress Coding Standards](https://codex.wordpress.org/WordPress_Coding_Standards)
+* When committing, reference your issue (if present) and include a note about the fix
+* If possible, and if applicable, please also add/update unit tests for your changes
+* Push the changes to your fork and submit a pull request to the 'master' branch of the EDD repository
+
+## Code Documentation
+
+* We ensure that every EDD function is documented well and follows the standards set by phpDoc
+* An example function can be found [here](https://gist.github.com/sunnyratilal/5308969)
+* Please make sure that every function is documented so that when we update our API Documentation things don't go awry!
+	* If you're adding/editing a function in a class, make sure to add `@access {private|public|protected}`
+* Finally, please use tabs and not spaces. The tab indent size should be 4 for all EDD code.
+
+At this point you're waiting on us to merge your pull request. We'll review all pull requests, and make suggestions and changes if necessary.
+
+## Developer Certificate of Origin
+By contributing to Easy Digital Downloads, you agree to the Developer Certificate of Origin.
+
+In its simplest form, the DCO states that you have permission to supply the code submitted to Easy Digital Downloads. Here is the DCO in detail:
+```
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+1 Letterman Drive
+Suite D4700
+San Francisco, CA, 94129
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.
+```
+
+# Additional Resources
+* [EDD Developer's API](https://easydigitaldownloads.com/docs/developers-intro-to-easy-digital-downloads/)
+* [General GitHub Documentation](https://help.github.com/)
+* [GitHub Pull Request documentation](https://help.github.com/en/github/collaborating-with-issues-and-pull-requests/about-pull-requests)
+* [PHPUnit Tests Guide](https://phpunit.de/manual/current/en/writing-tests-for-phpunit.html)