wru 2020 update (2.0.0)

[mdblocker]

Changed all defaults to 2020 data, and added a message to notify users of the year being used when pulling census data.

[1beb]

Please remove the binary files in src/ they are a remnant of your local build that should not be distributed with the package.

src/RcppExports.o
src/aux_funs.o
src/sample_me.o
src/wru.so

[mdblocker]

@beb I rescued the afore mentioned files from the trash and added them to .gitignore instead, added one I missed. I think I have all the files dated to my commit. Unless you see one I missed I believe this is ready to go.

[1beb]

@mdblocker Now that we've updated the defaults we need to update the tests to reflect the updates. What I would like to do is have two separate copies. One copy with the old default arg set and a new set with the updated arg that runs off of a different census data set. You'll need to recreate the data for 2020 in tests/data/census_block_nj_2010 and save it as a new file 2020.