Add upgrade guide

mabdullahsari · mabdullahsari · commit 2a59c469de27 · 2024-03-18T08:48:13.000+01:00
diff --git a/.gitattributes b/.gitattributes
@@ -12,3 +12,4 @@
 /pint.json               export-ignore
 /phpstan.neon.dist       export-ignore
 /CONTRIBUTING.md         export-ignore
+/UPGRADING.md            export-ignore
diff --git a/UPGRADING.md b/UPGRADING.md
@@ -0,0 +1,7 @@
+# Upgrade Guide
+
+## v1 → v2
+
+The Expo notifications channel has been rewritten from the ground up with a much more stable foundation.
+
+Unfortunately, this means that there is no direct upgrade path from v1 to v2.
