[enh] can use regex in find/find_all
[doc] document regex usage in querying
[enh] allow to use re: syntaxe for regex usage in find/find_all
[doc] document re: syntaxe for querying
[enh] allow to use glob syntaxe for find/find_all
[doc] document globs syntaxe for find/find_all
[doc] make explicit the regex syntaxe
[mod] update TODO