Update Dependencies (#358)

- update dependencies
- remove travis "before_install"
- only run coverage on one version

.travis.yml

@@ -4,11 +4,6 @@ node_js:
 - "8"
 # Test against highest node version available
 - lts/*
-before_install:
-- |
-  # Test against oldest allowed packages
-  # sed -i 's/"\^/"/g' package.json
-  npm i mongoose@5.5.14 --no-save
 script:
 # Audit to make sure there are no vulnerabilities, but do not affect the whole build
 - (npm audit || exit 0)
@@ -25,5 +20,8 @@ deploy:
       only:
       - master
 after_success:
-# Generate the Coverage
-- npm run coverage
+# Generate the Coverage only for one version
+- |
+  if [[ $TRAVIS_NODE_VERSION == "lts/*" ]]; then
+    npm run coverage
+  fi

README.md

@@ -541,3 +541,7 @@ For reference properties:
 
 * Add frequently used (currently not present) features if needed
 * Create more tests (break down current huge one into multiple unit tests)
+
+### Notes
+
+* `mongoose` is a peer-dependency, and a dev dependency to install it for dev purposes