Install referrer does not send the first session

Install referrer does not send the first session
Timer is not created every time it starts
Hash functions accessible for plugins

Migration Guide.

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Pull Request #126

Click label in attributions

New click label parameter in attribution
Inject optional parameters in criteo events
Add partner id optional parameter in criteo

Migration Guide.

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Pull Request #128

Multi-process app support

• Support for muti-process apps
• Criteo plugin update

Migration Guide.

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Pull Request #114 #116

Criteo plugin update

• Criteo plugin update
• Google Play Services availability check changed

Migration Guide.

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Pull Request #113

Prefix sociomantic params

Prefix sociomantic params to avoid ambiguities

Migration Guide.

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Pull Request #111

Sociomantic plugin

Added Sociomantic plugin
Fix Criteo product string parsing
Update documentation to Google play services v7

Migration Guide.

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Pull Request #108 #109

String formatting using US locale

String formatting using US locale.
Closes issue #102 and PR #100

Migration Guide.

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Pull Request #101

Update Criteo Plugin

Update Criteo Plugin with new events
See doc for more information.
Improved serialization and migration.

Migration Guide.

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Pull Request #93 and #94

Version 4 SDK

Replaced Response Data delegate with Attribution changed delegate
Config objects to launch SDK and track events
Send currency with revenue
Add Partner parameters
Offline mode
Criteo plugin allows to track Criteo type of events
See doc for more information.

Migration Guide.

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Pull Request #90

Target SDK 21

Change Android SDK target to 21, a.k.a, Lollipop

Migration Guide.

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Pull Request #87