add a "testing tool" to disable/enable internet completely in a given
python session in order to test whether non-remote tests are trying to
access the internet
import & use turn_internet_off throughout
turn internet back on at the end of scripts
minor change to Exception raised by off-internet guard
*removed* local turn on/off of tests, since they're run at import time,
which is wrong
*added* global turn off in conftest.py
use patching in test_splatalogue
added splatalogue setup_package
test_utils has a string-based parsing moved to remote_data
added LAMDA test data (a stripped co.txt)
added setup_package for lamda
tests now local for LAMDA
added LAMDA remote tests
mark LAMDA remote tests as remote
fix lamda test data to report correct nrows
sha tests pass!
added SHA data for tests
add sha's setup_package
Merge branch 'sha-localtests' into monkeypatch-tools
Merge branch 'lamda-localtests' into monkeypatch-tools
Merge pull request #202 from keflavich/lamda-localtests

LAMDA local tests