Update issue templates

- Report a issue template
- Pull request template
- Bug report template

.github/ISSUE_TEMPLATE/bug_issue_template.md

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+---
+name: BUG_ISSUE_TEMPLATE
+about: Report a bug
+title: "[BUG]"
+labels: Bug
+assignees: ckti, MitchellCash, CeForce, cevap, FornaxA
+
+---
+
+<!-- This issue tracker is only for technical issues related to Ion Core.
+
+General ion questions and/or support requests are best directed to the ionomy support support@ionomy.com, Ionomy Discord https://discord.gg/vuZn7gC or even  on Bitcoin StackExchange at https://bitcoin.stackexchange.com.
+
+For reporting security issues, please read instructions at support@ionomy.com or call us in US (+1) (844) 237-2721.
+
+If the node is "stuck" during sync or giving "block checksum mismatch" errors, please ensure your hardware is stable by running memtest and observe CPU temperature with a load-test tool such as linpack before creating an issue! -->
+
+<!-- Describe the issue -->
+<!--- What behavior did you expect? -->
+
+<!--- What was the actual behavior (provide screenshots if the issue is GUI-related)? -->
+
+<!--- How reliably can you reproduce the issue, what are the steps to do so? -->
+
+<!-- What version of Ion Core are you using, where did you get it (website, self-compiled, etc)? -->
+
+<!-- What type of machine are you observing the error on (OS/CPU and disk type)? -->
+
+<!-- Any extra information that might be useful in the debugging process. -->
+<!--- This is normally the contents of a `debug.log` or `config.log` file. Raw text or a link to a pastebin type site are preferred. -->

.github/ISSUE_TEMPLATE/bug_report_template.md

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+---
+name: BUG_REPORT_TEMPLATE
+about: Create a report to help us improve Ion Core
+title: "[BUG]"
+labels: Bug
+assignees: ckti, MitchellCash, CeForce, cevap, FornaxA
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. iPhone6]
+ - OS: [e.g. iOS8.1]
+ - Browser [e.g. stock browser, safari]
+ - Version [e.g. 22]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/issue_template.md

@@ -0,0 +1,30 @@
+---
+name: ISSUE_TEMPLATE
+about: Report a issue
+title: ''
+labels: ''
+assignees: ckti, MitchellCash, CeForce, cevap, FornaxA
+
+---
+
+<!-- This issue tracker is only for technical issues related to Ion Core.
+
+General ion questions and/or support requests are best directed to the ionomy support support@ionomy.com, Ionomy Discord https://discord.gg/vuZn7gC or even  on Bitcoin StackExchange at https://bitcoin.stackexchange.com.
+
+For reporting security issues, please read instructions at support@ionomy.com or call us in US (+1) (844) 237-2721.
+
+If the node is "stuck" during sync or giving "block checksum mismatch" errors, please ensure your hardware is stable by running memtest and observe CPU temperature with a load-test tool such as linpack before creating an issue! -->
+
+<!-- Describe the issue -->
+<!--- What behavior did you expect? -->
+
+<!--- What was the actual behavior (provide screenshots if the issue is GUI-related)? -->
+
+<!--- How reliably can you reproduce the issue, what are the steps to do so? -->
+
+<!-- What version of Ion Core are you using, where did you get it (website, self-compiled, etc)? -->
+
+<!-- What type of machine are you observing the error on (OS/CPU and disk type)? -->
+
+<!-- Any extra information that might be useful in the debugging process. -->
+<!--- This is normally the contents of a `debug.log` or `config.log` file. Raw text or a link to a pastebin type site are preferred. -->

.github/ISSUE_TEMPLATE/pull_request_template.md

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+---
+name: PULL_REQUEST_TEMPLATE
+about: Describe this issue template's purpose here.
+title: ''
+labels: ''
+assignees: ckti, MitchellCash, CeForce, cevap, FornaxA
+
+---
+
+Pull requests without a rationale and clear improvement may be closed
+immediately.
+
+Please provide clear motivation for your patch and explain how it improves
+Ion Core user experience or Ion Core developer experience
+significantly.
+
+* Any test improvements or new tests that improve coverage are always welcome.
+* All other changes should have accompanying unit tests (see `src/test/`) or
+  functional tests (see `test/`). Contributors should note which tests cover
+  modified code. If no tests exist for a region of modified code, new tests
+  should accompany the change.
+* Bug fixes are most welcome when they come with steps to reproduce or an
+  explanation of the potential issue as well as reasoning for the way the bug
+  was fixed.
+* Features are welcome, but might be rejected due to design or scope issues.
+  If a feature is based on a lot of dependencies, contributors should first
+  consider building the system outside of Ion Core, if possible.
+* Refactoring changes are only accepted if they are required for a feature or
+  bug fix or otherwise improve developer experience significantly. For example,
+  most "code style" refactoring changes require a thorough explanation why they
+  are useful, what downsides they have and why they *significantly* improve
+  developer experience or avoid serious programming bugs. Note that code style
+  is often a subjective matter. Unless they are explicitly mentioned to be
+  preferred in the [developer notes](/doc/developer-notes.md), stylistic code
+  changes are usually rejected.
+
+Ion Core has a thorough review process and even the most trivial change
+needs to pass a lot of eyes and requires non-zero or even substantial time
+effort to review. There is a huge lack of active reviewers on the project, so
+patches often sit for a long time.