dev dependencies: replace individual lodash functions (pouchdb#8907)

* it's not clear if these individual functions' releases are kept up-to-date with main lodash module
* keeping multiple dependencies up-to-date is harder than working with a single lodash dependency
* the whole of lodash is available anyway in dev via sub-dependencies

bin/dev-server.js

@@ -4,7 +4,7 @@
 
 var watch = require('watch-glob');
 var http_server = require('http-server');
-var debounce = require('lodash.debounce');
+const { debounce } = require('lodash');
 var browserify = require('browserify');
 var fs = require('fs');
 

bin/update-package-json-for-publish.js

@@ -12,8 +12,7 @@ var path = require('path');
 var glob = require('glob');
 var findRequires = require('find-requires');
 var builtinModules = require('builtin-modules');
-var uniq = require('lodash.uniq');
-var flatten = require('lodash.flatten');
+const { flatten, uniq } = require('lodash');
 
 var topPkg = JSON.parse(fs.readFileSync('./package.json', 'utf8'));
 var modules = fs.readdirSync('./packages/node_modules');

package.json

@@ -80,9 +80,7 @@
     "istanbul": "0.4.5",
     "istanbul-coveralls": "1.0.3",
     "less": "3.9.0",
-    "lodash.debounce": "4.0.8",
-    "lodash.flatten": "4.4.0",
-    "lodash.uniq": "4.5.0",
+    "lodash": "4.17.21",
     "marky": "1.2.5",
     "median": "0.0.2",
     "mkdirp": "0.5.1",