Nathan Poirier

Fix crash caused by test webhooks

1

n8n crashes when a test webhook receives two requests at exactly the same time. ``` /usr/local/lib/node_modules/n8n/dist/src/TestWebhooks.js:62 clearTimeout(this.testWebhookData[webhookKey].timeout); ^ TypeError: Cannot read properties of undefined (reading 'timeout') at /usr/local/lib/node_modules/n8n/dist/src/TestWebhooks.js:62:59 ```

Fix currency and unit conversion

5

Fix #42 and fix #45 by removing the `ZWD` currency alias. Also filter currency names (>= 3 chars, only letters and not colliding with existing units) to prevent bugs with...