Check arguments from case files (#118)
if user scenarios specified, get_results_all does not stop if any of the user scenarios are not in the directory. Provides warning message listing the scenarios that are not in the directory, and continues running with the ones that were
tryCatch used to allow loop over replicates and scenarios to continue even if required SS files are not available in "em" directory, and writes error message to say which scenarios and replicates did not have SS files
removed if else statement in get_results_scenario from earlier push
Merge branch 'master' into update_get_results
Switch 2 messages to warnings
Strip some whitespace
Re-arrange basic-run.R tests

- wrapped function calls with testthat expectations
- switched to some optimized SS3 binaries
- cleaned up some more files that get created
- commented out some that won't run right now
Merge branch 'update_get_results'