* Also make a `spring-spel-function`, `spring-filter-function` as auto-config
* Fix Checkstyle violations in those module, as well as in the `spring-payload-converter-function`
* Add `spring-` prefix to function names
Fixes: #9
This commit renames each sub-module in the common, consumer, function
and supplier groups with a prefix of `spring-`.
* Update README.adoc links to new prefixed names