chore: bump version to 2.0.0 for release

Prepare for v2.0.0 release:
- Update version in devflow/__init__.py to 2.0.0
- Update version in setup.py to 2.0.0
- Update CHANGELOG.md with v2.0.0 release date (2026-03-19)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: itdove

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.0.0] - 2026-03-19
+
 ### Added
 - Multi-project workflow support with shared context for cross-repository features (#149)
   - **Architecture:** Creates ONE conversation with SHARED CONTEXT across all selected projects
@@ -112,6 +114,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - JIRA auto-transition for analysis-only sessions
 - Project path encoding for conversation files
 
-[unreleased]: https://github.com/itdove/devaiflow/compare/v1.0.0...HEAD
-
+[unreleased]: https://github.com/itdove/devaiflow/compare/v2.0.0...HEAD
+[2.0.0]: https://github.com/itdove/devaiflow/compare/v1.0.0...v2.0.0
 [1.0.0]: https://github.com/itdove/devaiflow/tags/v1.0.0

devflow/__init__.py

@@ -1,3 +1,3 @@
 """DevAIFlow - AI-Powered Development Workflow Manager with JIRA integration."""
 
-__version__ = "1.0.1-dev"
+__version__ = "2.0.0"

setup.py

@@ -7,7 +7,7 @@
 
 setup(
     name="devaiflow",
-    version="1.0.1-dev",
+    version="2.0.0",
     author="Dominique Vernier",
     description="DevAIFlow - Manage AI coding assistant sessions with optional issue tracker integration",
     long_description=long_description,