Feat/remove support node 8 (#484)

* ci(codecov): temporary disabled codecov from CI process

* chore: dropped support for Node.js v8

BREAKING CHANGE: Node.js 8 is not supported anymore

Author: micheleriva

.github/workflows/ci-actions.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [8.x, 10.x, 12.x]
+        node-version: [10.x, 12.x]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2

packages/data-point-cache/README.md

@@ -8,7 +8,7 @@ Factory method to create a simple cache API that you can use for data persistenc
 
 ## Requirements
 
-- Node 8 LTS (or higher)
+- Node 10 LTS (or higher)
 - [Redis](https://redis.io/) (Optional for development)
 
 ## Install

packages/data-point-express/README.md

@@ -6,7 +6,7 @@
 
 ## Requirements
 
-- Node 8 LTS (or higher)
+- Node 10 LTS (or higher)
 - [Redis](https://redis.io/) (Optional for development)
 - Peer dependencies: [data-point](https://www.npmjs.com/package/data-point), [Express](https://www.npmjs.com/package/express)
 

packages/data-point-service/README.md

@@ -6,7 +6,7 @@
 
 ## Requirements
 
-- Node 8 LTS (or higher)
+- Node 10 LTS (or higher)
 - [Redis](https://redis.io/) (Optional for development)
 
 ## Install

packages/data-point/README.md

@@ -8,7 +8,7 @@ DataPoint helps you reason with and streamline your data processing layer. With
 
 **Prerequisites**
 
-Node v8 LTS or higher
+Node v10 LTS or higher
 
 **Installing**