Allow non semver versions #178
Description
My issue is related to #70. I tried
auto-changelog -v "$(date +%Y-%m-%d-T%H%M%S)" --tag-pattern .+
but I got
Error: --latest-version must be a valid semver version
at getLatestVersion (/usr/local/lib/node_modules/auto-changelog/src/run.js:74:13)
at run (/usr/local/lib/node_modules/auto-changelog/src/run.js:98:31)
at process._tickCallback (internal/process/next_tick.js:68:7)