Add privacy.md

Author: kenstir

docs/privacy.md

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+---
+title: "Privacy Policy"
+---
+# Privacy Policy
+
+This page outlines the privacy policy of Hemlock and related apps for Android ("the app"):
+
+- [Hemlock](https://play.google.com/store/apps/details?id=net.kenstir.apps.hemlock)
+- [Acorn Catalog](https://play.google.com/store/apps/details?id=net.kenstir.apps.bibliomation)
+- [COOL Libraries](https://play.google.com/store/apps/details?id=net.kenstir.apps.cool)
+- [CW MARS Libraries](https://play.google.com/store/apps/details?id=org.cwmars)
+- [Evergreen Indiana](https://play.google.com/store/apps/details?id=net.kenstir.apps.indiana)
+- [Missouri Evergreen](https://play.google.com/store/apps/details?id=net.kenstir.apps.mo)
+- [NOBLE Libraries](https://play.google.com/store/apps/details?id=net.kenstir.apps.noble)
+- [OWWL Library System](https://play.google.com/store/apps/details?id=net.kenstir.apps.owwl)
+- [PINES (Georgia)](https://play.google.com/store/apps/details?id=net.kenstir.apps.pines)
+- [SageCat](https://play.google.com/store/apps/details?id=net.kenstir.apps.sagecat)
+
+
+## Reason for Collection
+
+The app collects general data on which features are used and how
+often.  In the event of a crash, a stack trace is collected, along
+with the make and model of the device, and some logs about the network
+requests made by the app leading up to the crash.
+
+This information is used to fix bugs, and to improve and prioritize
+features.
+
+
+## Personal Data Collected
+
+- Installation UUID
+- IP addresses - once received it is geo-coded to a city and displayed on a map for 10 seconds. Retained temporarily.