chore: bump version number to v0.2.1 (MemTensor#131)

## Description
Bug Fixes:

Fixed reorganizer bugs and argument errors
Resolved None issue in reorganizer queue
Updated Python version constraints

New Features:

Added support for multiple embedders (Ark/Volcengine, Universal API)
Introduced Neo4j database integration and sharing capabilities
Added evaluation pipeline (longmemeval)
Implemented multi-language support and customizable system prompts
Added MCP (Model Context Protocol) server support with client demo

Improvements:

Enhanced memory management with ID returns and clustering optimizations
Simplified user onboarding with basic memos
Expanded LLM API support and optimized dependency management
Added development tools (download examples, issue templates, stale
management)

Documentation & DevOps:

Updated issue/PR templates and workflows
Improved multi-user example implementations

with significant additions to embedding support, database backends, and
user experience improvements.

chore: bump version number to v0.2.0 (MemTensor#66)

Recent updates include:

Updated feature request template and documentation links/images
Added structure reorganizer and conflict resolver functionality
Implemented OpenAI memory integration with evaluation guide
Updated memory reader with bug fixes

Key changes: Template improvements, new conflict resolution tools,
memory system enhancements, and bug fixes.

chore: bump version to v0.1.13 (MemTensor#48)

- Project Management:

Added issue templates and updated pull request template for better
contribution workflow
Enhanced PR template for clarity and completeness

- 📖 Documentation & Research:
     Published long version of MemOS paper
     Updated citations and references

Migrated all documentation to dedicated MemOS-Docs repository
Improved documentation structure and accessibility

- 🧪 Evaluation & Testing:

Added evaluation configuration examples
Implemented run locomo eval script for performance testing
Fixed redundant memory search branches in evaluation system

- 🔧 Features & Functionality:

Added internet retrieval capabilities to MemOS
Implemented Chain-of-Thought (CoT) functionality
Fixed ParsedTaskGoal usage in examples
Added unrelated memory filtering functionality

MemOS initial commit by MemTensor

Co-authored-by: Shichao Song <60967965+Ki-Seki@users.noreply.github.com>
Co-authored-by: CaralHsi <caralhsi@gmail.com>
Co-authored-by: chunyu li <78344051+fridayL@users.noreply.github.com>
Co-authored-by: jiawei yang <103758578+J1awei-Yang@users.noreply.github.com>
Co-authored-by: Wang Hanyu <128483880+MarrytheToilet@users.noreply.github.com>
Co-authored-by: Jiahao Huo <2151773@tongji.edu.cn>
Co-authored-by: Hao <42795704+Nyakult@users.noreply.github.com>
Co-authored-by: Travis Tang <travistang@foxmail.com>
Co-authored-by: Jihao Zhao <119649807+Robot2050@users.noreply.github.com>
Co-authored-by: spitzblattr <36479200+spitzblattr@users.noreply.github.com>
Co-authored-by: siminniu <146621079+siminniu@users.noreply.github.com>
Co-authored-by: hush <61102027+hush-cd@users.noreply.github.com>
Co-authored-by: Qingchen Yu <92162236+Duguce@users.noreply.github.com>
Co-authored-by: Kyrie Chen <kyriiiechen@gmail.com>
Co-authored-by: lijicode <34564964+lijicode@users.noreply.github.com>
Co-authored-by: 王鹏远（Pengyuan Wang） <18237423458@163.com>
Co-authored-by: Zhiyu Li <zhiyulee@ruc.edu.cn>
Co-authored-by: Yezhaohui Wang <yezhaohuiwang@gmail.com>