Bump version to v0.1.5

Author: anaslimem

README.md

@@ -2,14 +2,22 @@
 
 [![License: MIT/Apache-2.0](https://img.shields.io/badge/License-MIT%2FApache--2.0-blue.svg)](LICENSE)
 [![Status: Beta](https://img.shields.io/badge/Status-Beta-brightgreen.svg)](#current-status)
-[![Version](https://img.shields.io/badge/Version-0.1.4-blue.svg)](https://github.com/anaslimem/CortexaDB/releases)
+[![Version](https://img.shields.io/badge/Version-0.1.5-blue.svg)](https://github.com/anaslimem/CortexaDB/releases)
 
 **CortexaDB** is a simple, fast, and hard-durable embedded database designed specifically for AI agent memory. It provides a single-file-like experience (no server required) but with native support for vectors, graphs, and temporal search.
 
 Think of it as **SQLite, but with semantic and relational intelligence for your agents.**
 
 ---
 
+## What's New in v0.1.5
+
+- **Benchmark Suite** - Added comprehensive benchmarking with HNSW vs Exact comparison
+- **HNSW Performance Fix** - Fixed segmentation fault issue with usearch
+- **5x Speedup** - HNSW now runs ~5x faster than exact search with 95% recall
+
+---
+
 ## What's New in v0.1.4
 
 - **L2/Euclidean Distance** - Added support for L2 distance metric in HNSW
@@ -310,7 +318,7 @@ python benchmark/run_benchmark.py \
 ---
 
 ## License & Status
-CortexaDB is currently in **Beta (v0.1.4)**. It is released under the **MIT** and **Apache-2.0** licenses.  
+CortexaDB is currently in **Beta (v0.1.5)**. It is released under the **MIT** and **Apache-2.0** licenses.  
 We are actively refining the API and welcome feedback!
 
 ---

crates/cortexadb-core/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cortexadb-core"
-version = "0.1.4"
+version = "0.1.5"
 edition = "2021"
 authors = ["Anas Limem <limemanas0@gmail.com>"]
 description = "Fast, embedded vector + graph memory for AI agents"

crates/cortexadb-py/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cortexadb-py"
-version = "0.1.4"
+version = "0.1.5"
 edition = "2021"
 
 [lib]

crates/cortexadb-py/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "maturin"
 
 [project]
 name = "cortexadb"
-version = "0.1.4"
+version = "0.1.5"
 requires-python = ">=3.9"
 description = "Fast, embedded vector + graph memory for AI agents"
 authors = [