Release v2.0.0-rc.1

Signed-off-by: Martin Baillie <martin@baillie.id>

Makefile

@@ -191,7 +191,7 @@ integration-test: integration test ## Run a local development Vault and the inte
 
 tag: ## Create a signed commit and tag
 	echo >&2 "==> Tagging"
-	if [[ ! $(VERSION) =~ ^[0-9]+[.][0-9]+([.][0.9]*)?$  ]]; then \
+	if [[ ! $(VERSION) =~ ^[0-9]+[.][0-9]+([.][0.9]*)(-rc.[0-9]+)?$ ]]; then \
 		echo >&2 "ERROR: VERSION ($(VERSION)) is not a semantic version"; \
 		exit 1; \
 	fi
@@ -215,7 +215,6 @@ SHA256SUMS:
 	echo >&2 "==> Summing"
 	shasum --algorithm 256 $(PROJECT)-* > $@
 
-
 SHA256SUMS.sig: GPG=$(shell command -v gpg || \
 				(apt-get -qq update &>/dev/null && \
 				apt-get -yqq install gpg &>/dev/null && \