Improve contribution guide and GH issue template

.github/ISSUE_TEMPLATE/tech_request.md

@@ -0,0 +1,17 @@
+---
+name: Technical debt
+about: Suggest an idea to reduce technical debt
+title: "[TECH]"
+labels: enhancement
+assignees: ''
+
+---
+
+**Define a technical problem.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe possible solution.**
+A clear and concise description of what you want to happen.
+
+**Additional context**
+Add any other context or screenshots about the tech debt request here.

CONTRIBUTING.md

@@ -27,3 +27,17 @@ make all
 - Write your updates under `Unreleased` section
 - Add a link to the GitHub issue your code is solving
 - Add a link to your GitHub profile for credits
+
+
+### Release manager
+
+1. Select the next realease [SemVer](https://semver.org/) number.
+2. Update `CHANGELOG.md`:
+
+- Move changes from `Unreleased` section to a new release section
+- Add a link to `git diff`
+
+3. Update current tag mentions in `README.md`:
+
+- Docker version
+- Usage examples

build.clj

@@ -7,7 +7,7 @@
 
 (def lib 'org.pilosus/dienstplan)
 (def main 'dienstplan.core)
-(def version (format "0.4.%s" (b/git-count-revs nil)))
+(def version (format "0.5.%s" (b/git-count-revs nil)))
 (def class-dir "target/classes")
 (def src-dirs ["src" "resources"])
 (def basis (b/create-basis {:project "deps.edn"}))