Add CSS file for 3 column output
Add support for bold italic, super/subscript, font size, 3 col output, low score highlighting
Add a bunch of TODOs for postprocessing
Add .gitattributes to normalize line endings across OSs
Increase width of page to 900 pixels
Add 2nd level of warning for very low quality
Auto download & text block merge 1st pass

Make more self contained by downloading file automatically from Internet
Archive.  Add 1st pass of a block merge algorithm to reassemble block
fragments.  Work in progress from Sept. 2013.
Add yellow/orange backgrounds for low confidence chars
Clean up block merge. Add next/prev page links.  Add start page param.