Add a template for GMT release checklist

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,6 +1,9 @@
 ---
 name: Bug report
 about: Report a problem/bug to help us improve
+title: ''
+labels: ''
+assignees: ''
 
 ---
 

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,6 +1,9 @@
 ---
 name: Feature request
 about: Request the addition of a new feature/functionality
+title: ''
+labels: ''
+assignees: ''
 
 ---
 

.github/ISSUE_TEMPLATE/gmt-release-checklist.md

@@ -0,0 +1,34 @@
+---
+name: GMT Release Checklist
+about: Checklist for new GMT release.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Version**: x.x.x
+
+Things to do before release:
+
+- [ ] check `GMT_VERSION_YEAR` in `cmake/ConfigDefault.cmake`
+- [ ] check `GMT_PACKAGE_VERSION_*` in `cmake/ConfigDefault.cmake`
+- [ ] check `GMT_LIB_SOVERSION` in `cmake/ConfigDefault.cmake`
+- [ ] set `GMT_SOURCE_CODE_CONTROL_VERSION_STRING` in `cmake/ConfigDefault.cmake`
+- [ ] create source packages (tar.gz and tar.xz) (@PaulWessel)
+- [ ] create macOS Bundle (@PaulWessel)
+- [ ] create Windows binary packages (win32 and win64) (@joa-quim)
+- [ ] upload source packages, Windows binary packages and macOS bundle to FTP (@PaulWessel)
+- [ ] update conda packages via [conda-forge/gmt-feedstock](https://github.com/conda-forge/gmt-feedstock) (@leouieda, @seisman)
+- [ ] update [homebrew formula](https://github.com/Homebrew/homebrew-core/blob/master/Formula/gmt.rb) (@seisman)
+- [ ] update fink package
+- [ ] announcements
+
+Things to do after each release:
+
+- [ ] update `GMT_PACKAGE_VERSION_*` in `cmake/ConfigDefault.cmake`
+- [ ] uncomment `GMT_SOURCE_CODE_CONTROL_VERSION_STRING` in `cmake/ConfigDefault.cmake`
+
+---
+
+- [ ] Party :tada: (don't tick before all other checkboxes are ticked!)