# Deno v0.21.0 — Release & Upgrade Intelligence
- **Product:** Deno (https://deno.com)
- **Version:** v0.21.0
- **Released:** Oct 19, 2019
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/deno/updates/v0.21.0/

## Executive Summary (TL;DR)
Deno v0.21.0. Source highlight: feat: --reload flag to take arg for partial reload (#3109)

## New Features
- feat: --reload flag to take arg for partial reload (#3109)
- feat: Allow "deno eval" to run code as module (#3148)
- feat: support --allow-net=:4500 (#3115)

## Improvements
- perf: eager poll async ops in Isolate (#3046, #3128)

## Bug Fixes
- fix: Ensure DENO_DIR when saving the REPL history (#3106)
- fix: Update echo_server to new listen API (denoland/deno_std#625)
- fix: [prettier] deno fmt should format jsx/tsx files (#3118)
- fix: [tls] op_dial_tls is not registerd and broken (#3121)
- fix: clearTimer bug (#3143)
- fix: remote jsx/tsx files were compiled as js/ts (#3125)