[FIX] Module strip for stage list.
[FIX] Only create stage directories when in write mode.
[FIX] Use stage name not stage number for finding stage directories.
prev.
[FIX] Proper merging of head and tail in messages list.
[EXT] Added option `nocatch(boolean)` that allows exceptions to be caught by the calling AP module.
[EXT] Use nocatch/1 option for downloading files.
[SC] Simplified archive extraction code.
[FIX] Throw exceptions in archive extraction.
[EXT] Add style for errors in Web interface.
[FIX] FINISHED file is no longer dropped when throwing an exception.
[EXT] Throw an exception when a file that should be RDF is non-RDF XML or HTML.
[EXT] Added unpackaging of tgz files.
[SC] Simplified unpackaging code.