Merge pull request #135 from wmde/upgradeDependencies-2021-06

chore: upgrade dependencies and add lockfile

Author: mariushoch

.gitignore

@@ -3,8 +3,6 @@
 
 composer.lock
 
-package-lock.json
-
 !.*
 .idea/
 

.travis.yml

@@ -1,11 +1,9 @@
 language: node_js
 
 node_js:
-- 4
-- 5
-- 6
-- 7
-- 8
+- 10
+- 12
+- 14
 
 before_script:
   - npm install

README.md

@@ -15,6 +15,7 @@ mirrors most of the PHP implementations of DataValue classes as specified in the
 ### 0.11.0 (dev)
 * Removed `globeCoordinate.GlobeCoordinate.getDecimal`
 * Removed `getLowerBound`, `getUpperBound`, `getAmount` from QuantityValue
+* Removed support for Node.js versions older than v10
 ### 0.10.0 (2017-10-06)
 * The library is now a pure JavaScript library.
 * Removed MediaWiki ResourceLoader module definitions.