Add release notes for v0.0.87

Author: bakwc

.github/RELEASE_NOTES_v0.0.87.md

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+# Release v0.0.87
+
+## New Features
+
+### 🎉 Customizable PARTITION BY Support for ClickHouse Tables
+
+- **New Configuration Option**: Added `partition_bys` config section with database/table filtering capabilities (similar to existing `indexes` configuration)
+- **Custom Expressions**: Override the default `intDiv(id, 4294967)` partitioning with user-defined partition logic
+- **Snowflake ID Support**: Specifically addresses issues with Snowflake-style IDs creating excessive partitions that trigger `max_partitions_per_insert_block` limits
+- **Time-based Partitioning**: Enable efficient time-based partitioning patterns like `toYYYYMM(created_at)`
+- **Backward Compatible**: Maintains existing behavior when not configured
+
+## Configuration Example
+
+```yaml
+partition_bys:
+  - databases: '*'
+    tables: ['orders', 'user_events']
+    partition_by: 'toYYYYMM(created_at)'
+  - databases: ['analytics']
+    tables: ['*']
+    partition_by: 'toYYYYMMDD(event_date)'
+```
+
+## Problem Solved
+
+Fixes the issue where large Snowflake-style IDs (e.g., `1849360358546407424`) with default partitioning created too many partitions, causing replication failures due to ClickHouse's `max_partitions_per_insert_block` limit.
+
+Users can now specify efficient partitioning strategies based on their data patterns and requirements.
+
+## Tests
+
+- Added comprehensive test coverage to verify custom partition functionality
+- Ensures both default and custom partition behaviors work correctly
+- Validates backward compatibility
+
+---
+
+**Closes**: #161
+**Pull Request**: #164