Added issue and pull request templates.

.github/issue_template.md

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+*Delete irrelevant parts of this template.*
+
+### For general questions:
+
+Describe exactly what you did and what you want to happen.
+Use the questions at the bottom of this template as a guide.
+
+Use Markdown syntax, particularly for code blocks: see https://help.github.com/articles/basic-writing-and-formatting-syntax/#quoting-code
+
+### For security issues:
+
+See https://www.oracle.com/support/assurance/vulnerability-remediation/reporting-security-vulnerabilities.html for how to report security issues.
+
+### For installation issues:
+
+Use a gist for screen output and logs: see https://gist.github.com/
+**Do not paste long output into this issue**
+
+Review the install instructions at
+https://github.com/oracle/python-cx_Oracle#installation
+
+Review your output and logs.  **Google any errors**
+
+#### Answer the following questions:
+
+1. What is your version of Python? Is it 32-bit or 64-bit?
+
+2. What is your version of cx_Oracle?
+
+3. What is your version of the Oracle client (e.g. Instant Client)?  How was it
+   installed?  Where is it installed?
+
+4. What is your OS and version?
+
+5. What compiler version did you use?  For example, with GCC, run
+   `gcc --version`.
+
+6. What environment variables did you set?  How *exactly* did you set them?
+
+7. What *exact* command caused the problem (e.g. what command did you try to
+   install with)?  Who were you logged in as?
+
+8. What error(s) you are seeing?
+

.github/pull_request_template.md

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+Thanks for contributing!
+
+Before submitting PRs for cx_Oracle you must have your signed *Oracle
+Contributor Agreement* accepted.  See
+https://www.oracle.com/technetwork/community/oca-486395.html
+
+If the problem solved is small, you may find it easier to open an Issue
+describing the problem and its cause so we can create the fix.
+
+The bottom of your commit message must have the following line using your name
+and e-mail address as it appears in the OCA Signatories list.
+
+```
+Signed-off-by: Your Name <you@example.org>
+```
+
+This can be automatically added to pull requests by committing with:
+
+```
+git commit --signoff
+````