longer sec titles in summary (Fixes #16)
cleaned up comparison functions (Fixes #14)
passed tests now show output on review
re-review now showing all tests (in-progress)
modifications to introduce as.character.header
cleaning up display of review menu
updating interactive docs
review mode status determined from unitizerBrowse object
adding corner case test
Cleaned up review mechanism
Restoration message issue (Fixes #22)
doc updates
interactive messaging cleanup
review menu order now in order of test file

Used to be displayed in the order that it would be offered
for review by unitizer, which is by section / sub-section
instead of order of test file.
tweaked screen output
now reload packages with 'warn.conflict=TRUE'

This prevents all those warnings when packages that
'overwrite' objects are re-loaded since those warnings
should have already been seen by the user when they loaded them
changed 'search.path.clean' default to TRUE
updated tests for changes in review menu
Clearer guidance for what do with failed test (Fixes #7)
moved 'unitizer_core' to different file