Remove copyright headers, update TOXSWA_cwa test

- The window column of the windows component of a TOXSWA_cwa object is not
a factor any more, but a character vector.
- testthat::expect_equal_to_reference is replaced by
testthat::expect_known_output, so we can have git diff show what has
changed

1 files changed, 0 insertions, 0 deletions

diff --git a/tests/testthat/H_sw_R1_stream_windows.txt b/tests/testthat/H_sw_R1_stream_windows.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/testthat/H_sw_R1_stream_windows.txt