Tests fail on Windows

[cpliakas]

=== RUN   TestHandleEventListener
    event_test.go:50: error sending signal: not supported by windows
--- FAIL: TestHandleEventListener (0.10s)

[cpliakas]

Fixed above error in f9085b8

Tests now pass on Windows, but for some reasons the runner goes into debug mode which fails.

PASS
ok  	github.com/cpliakas/cliutil	0.263s
Entering debug mode. Use h or ? for help. 

At D:\a\_temp\87968c3f-e659-4859-9d9d-6b8ba4400405.ps1:3 char:5
+ if ((Test-Path -LiteralPath variable:\LASTEXITCODE)) { exit $LASTEXIT …
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[DBG]: PS D:\a\cliutil\cliutil>> 
Error: Process completed with exit code 1.