fix Connect-To bug (#41)

* replace internal coverage tools with PSCoverage (#39)

* use PSCoverage instead of internal module

* remove internal pscoverage ref

* remove deprecated and internal coverage module

* fix dependency test for conection types without deps

* - tests should return true for missing deps (fixes #40)

* remove pre release counter

* change prerelease tag

src/PSCredentialStore.psd1

@@ -122,7 +122,7 @@
             ReleaseNotes = 'This is a pre-release version!. Do not use in production!'
 
             # Prerelease string of this module
-            Prerelease   = 'alpha1'
+            Prerelease   = 'preview'
 
             # Flag to indicate whether the module requires explicit user acceptance for install/update
             # RequireLicenseAcceptance = $false