feat: Change CLI versioning

Semver is great for libraries - it provides info about kind of change.
But for user tools most important is to know how old is this version.
Calver suits here better.

Different schemes also minimizes mistakes during project maintenance.

Makefile

@@ -32,7 +32,7 @@ build: check test
 	@CURRENT_VER_TAG="$$(git tag --points-at HEAD | grep "^cli" | sed 's/^cli\/v//' | sort -t. -k 1,1n -k 2,2n -k 3,3n | tail -1)"; \
 		PREV_VER_TAG="$$(git tag | grep "^cli" | sed 's/^cli\/v//' | sort -t. -k 1,1n -k 2,2n -k 3,3n | tail -1)"; \
 		CURRENT_COMMIT_TAG="$$(TZ=UTC git --no-pager show --quiet --abbrev=12 --date='format-local:%Y%m%d%H%M%S' --format='%cd-%h')"; \
-		PSEUDOVERSION="$${PREV_VER_TAG:-0.0.0}-$$CURRENT_COMMIT_TAG"; \
+		PSEUDOVERSION="$${PREV_VER_TAG:-0001.01}-$$CURRENT_COMMIT_TAG"; \
 		VERSION="$${CURRENT_VER_TAG:-$$PSEUDOVERSION}"; \
 		go build -C $(CLI_DIR) -ldflags="-s -w -X main.AppVersion=$$VERSION" -o '../../dist/sortof'; \
 
@@ -41,7 +41,7 @@ dist: check test
 	@CURRENT_VER_TAG="$$(git tag --points-at HEAD | grep "^cli" | sed 's/^cli\/v//' | sort -t. -k 1,1n -k 2,2n -k 3,3n | tail -1)"; \
 		PREV_VER_TAG="$$(git tag | grep "^cli" | sed 's/^cli\/v//' | sort -t. -k 1,1n -k 2,2n -k 3,3n | tail -1)"; \
 		CURRENT_COMMIT_TAG="$$(TZ=UTC git --no-pager show --quiet --abbrev=12 --date='format-local:%Y%m%d%H%M%S' --format='%cd-%h')"; \
-		PSEUDOVERSION="$${PREV_VER_TAG:-0.0.0}-$$CURRENT_COMMIT_TAG"; \
+		PSEUDOVERSION="$${PREV_VER_TAG:-0001.01}-$$CURRENT_COMMIT_TAG"; \
 		VERSION="$${CURRENT_VER_TAG:-$$PSEUDOVERSION}"; \
 		GOOS=openbsd GOARCH=amd64 go build -C $(CLI_DIR) -ldflags="-s -w -X main.AppVersion=$$VERSION" -o '../../dist/sortof-openbsd_amd64'; \
 		GOOS=linux GOARCH=amd64 go build -C $(CLI_DIR) -ldflags="-s -w -X main.AppVersion=$$VERSION" -o '../../dist/sortof-linux_amd64'; \
@@ -59,7 +59,7 @@ cli-release:
 	@git pull --rebase
 	@echo '# Create new CLI release tag' >&2
 	@PREV_VER_TAG=$$(git tag | grep "^cli" | sed 's/^cli\/v//' | sort -t. -k 1,1n -k 2,2n -k 3,3n | tail -1); \
-		printf 'Choose new version number for CLI (>%s): ' "$${PREV_VER_TAG:-0.0.0}"
+		printf 'Choose new version number for CLI (calver; >%s): ' "$${PREV_VER_TAG:-2023.10}"
 	@read -r VERSION; \
 		git tag "cli/v$$VERSION"; \
 		git push --tags
@@ -69,7 +69,7 @@ module-release:
 	@git pull --rebase
 	@echo '# Create new Go module release tag' >&2
 	@PREV_VER_TAG=$$(git tag | grep "^v" | sed 's/^v//' | sort -t. -k 1,1n -k 2,2n -k 3,3n | tail -1); \
-		printf 'Choose new version number for module (>%s): ' "$${PREV_VER_TAG:-0.0.0}"
+		printf 'Choose new version number for module (semver; >%s): ' "$${PREV_VER_TAG:-0.0.0}"
 	@read -r VERSION; \
 		git tag "v$$VERSION"; \
 		git push --tags

README.md

@@ -50,9 +50,9 @@ Use `make` (GNU or BSD):
 ### Versioning
 
 The repo contains CLI and Go module which can be developed with different pace.
-Commits with versions are tagged using [semantic versioning](https://semver.org/):
-- `vX.X.X` - versions of Go module
-- `cli/vX.X.X` - versions of command-line utility.
+Commits with versions are tagged with:
+- `vX.X.X` (_[semantic versioning](https://semver.org/)_) - versions of Go module
+- `cli/vYYYY.0M.MICRO` (_[calendar versioning](https://calver.org/)_) - versions of command-line utility.
 
 ## License