Adding -silent flag

Adds a flag from PR #18 which allows for suppressing text output from the command

v2.4.0: decimal point bugfix

fix url rendering of singe decimal coverage (#16)

Fixes invalid URLs when decimals are included in the coverage value, thanks to @bakito!

v2.3.0: Support for optional root folder for testing

Var name bug fixes

v2.2.0: added support testing short coverage (#13)

* added support testing short coverage

* append short and tags flags in coverage command

* deleted unnecesary initialization

* Small change to wording for clarity.

Co-authored-by: Jordan Poles <jpoles1@users.noreply.github.com>