Merge branch 'release/0.12.13' into develop
fix pom version for next step development
fix ec configurations
update formatter rule
add best practice to README.md
TransformerFactory should treat null in same way with Renderer
update format
add comment
add a sample rule of redirect by 301
Merge branch 'master' into develop
fix bug that redirect does not work when specify response code by string convention
remove redundant file
fix shells(rename start jetty shell and add a fix version shell for release operation)
copy docbkx configuration from spring, now we make the document prettier. (pdf cannot work correctly yet)
fix bugs on handling with SpecialRenderer#Clear
add more source references to sample sources
Merge branch 'master' into develop
add a sample out sourced configuration file
fix version for release
add release note to README.md