Thread.fork
Io.output_to
Io.output_of

"stringify"
"Thread.once"
"Thread.repeating"

"Io.print()"
"Luan.values"
remove "as_table"

"Thread.schedule"

"Thread.safe"

"Http.uncache_site"
"full_path"
"Http.version"

"java_threads.luan"
"luan_threads.luan"
"Shell_mod.luan"
"shell.luan"

"Io.repr"
"String.split"
"logging/init.luan"

"request.header"
"response.header"
"request.parameter"
"request.cookie"
"set_cookie"
"assert"

headers lower case
remove run_later
remove Thread.global