[Feature Request] Support scraping separate areas on separate pages

[retinoic]

As far as I can tell, while multiple areas and multiple pages can be specified with -a and -p, there is no way to currently specify a defined area on a specific page as separate pages cannot be specified for each area. Maybe this works with the python wrapper, but would be nice to have natively implemented here:

example:

java -jar tabula-java.jar -p 1 -a 115.898,278.078,125.843,378.293 -p 4 -a 127.373,271.958,138.083,372.938 -b \dir\

this command doesn't work, (-p is only examined once), and both areas are captured on page 1, rather than an area on page 1 and an area on page 4.