3.0.0-rc.0

contracts/package.json

 {
   "name": "@openzeppelin/contracts",
-  "version": "2.5.0",
+  "version": "3.0.0-rc.0",
   "description": "Secure Smart Contract library for Solidity",
   "files": [
     "**/*.sol",

docs/antora.yml

 name: contracts
 title: Contracts
-version: 2.x
+version: 3.x
 nav:
   - modules/ROOT/nav.adoc
   - modules/api/nav.adoc

ethpm.json

 {
   "package_name": "zeppelin",
-  "version": "2.5.0",
+  "version": "3.0.0-rc.0",
   "description": "Secure Smart Contract library for Solidity",
   "authors": [
     "OpenZeppelin Community <maintainers@openzeppelin.org>"

package-lock.json

 {
   "name": "openzeppelin-solidity",
-  "version": "2.5.0",
+  "version": "3.0.0-rc.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

 {
   "name": "openzeppelin-solidity",
-  "version": "2.5.0",
+  "version": "3.0.0-rc.0",
   "description": "Secure Smart Contract library for Solidity",
   "files": [
     "/contracts/**/*.sol",