set each unit test method in IOUtilsTest as private
updated
[debug] ConfigException should be a RuntimeException
use Config in the way of 'dependency injection'
refine the constants useage
SitemapPersist done
[debug] correct the 'sitemaps' folder absolute path generation
SitemapPersist.get() passed its unit test
ignore folders named with test
ignore folders named with '_test', but do not ignore folders named with 'test'
SitemapPersistBuilder can accept File as a parameter for build() now, which makes unit tests more convinient
_test will not be ignored any more
add sitemap unit tests
enable the unit test method saving a sitemap
[debug] add considerations of duplicate item names in a .items file during dextextualization
refine item parsing
[debug] fix the bug that 'Goups:...:...' can not be parsed