Add keystore to samples.
Merge last changes from master.
Remove suppress annotations.
Update copyright in LifeOpenIab sample.
Merge pull request #267 from kirich1409/update_copyright

Update copyright in LifeOpenIab sample
Fix potential crash in Options created via Builder.
Merge pull request #268 from kirich1409/builder_fix

Fix potential crash in Options created via Builder.
Merge pull request #263 from kirich1409/keystores

Add keystore to samples.
Merge branch 'master-upstream' into unity-ios