Organized covr usage

Removed the check for covr in tests and set environment variable NOT_CRAN to not skip the tests when running covr.

Updated NEWS

test updated

BIDI11 is in process to leave IBOV and at 2022-06-21 it had no trade, but it is still in the IBOV composition and that test was leading to a failure.

updated NAMESPACE

Updated to 0.0.2