Don't use fibers anymore
Should be more stable
fixes #5
fixes #4
only try to resume upload  if files are in uploadTree #7
removed node-cache from fs.coffee #7
wrap error handling for getting pages of files #7
don't call callback if there was an error while getting a page of errors #7.
indenting error prevented parsing folders properly. #7
catch #9
if a file cannot be removed, assume success.
fix #8 on loading folderTree
remove download lock after writing file