Add bridge casts for casting from Mixpanel* to void* and back
Add bridge casts for casting from Mixpanel* to void* and back

jlukanta/mixpanel-iphone,senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,jlukanta/mixpanel-iphone,jlukanta/mixpanel-iphone