Add changesets.

Author: rkistner

.changeset/brown-eggs-dress.md

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+---
+'@powersync/common': minor
+---
+
+Improve performance of MOVE and REMOVE operations.

.changeset/cuddly-paws-allow.md

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+---
+'@powersync/react-native': minor
+---
+
+Use react-native-quick-sqlite 1.3.0 / powersync-sqlite-core 0.2.1.

.changeset/popular-phones-knock.md

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+---
+'@powersync/common': patch
+---
+
+Always cast `target_op` (write checkpoint) to ensure it's an integer.

.changeset/slow-lizards-sleep.md

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+---
+'@powersync/common': minor
+---
+
+Add custom x-user-agent header and client_id parameter to requests.

.changeset/small-pants-relax.md

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+---
+'@powersync/web': minor
+---
+
+Use wa-sqlite 0.3.0 / powersync-sqlite-core 0.2.0.

.changeset/soft-mice-type.md

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+---
+'@powersync/common': minor
+---
+
+Emit update notifications on `disconnectAndClear()`.

.changeset/tiny-worms-mate.md

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+---
+'@powersync/common': patch
+---
+
+Validate that the powersync-sqlite-core version number is in a compatible range of ^0.2.0.

.changeset/two-walls-nail.md

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+---
+'@powersync/common': minor
+---
+
+Persist lastSyncedAt timestamp.