bump version

.bumpversion.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 3, 0, 0, 'beta', 8
+current_version = 3, 0, 0, 'candidate', 0
 commit = False
 tag = False
 parse = (?P<major>\d+)\,\ (?P<minor>\d+)\,\ (?P<patch>\d+)\,\ \'(?P<release>\S+)\'\,\ (?P<build>\d+)

dev_mode/package.json

@@ -198,7 +198,7 @@
   },
   "jupyterlab": {
     "name": "JupyterLab",
-    "version": "3.0.0b8",
+    "version": "3.0.0rc0",
     "extensions": {
       "@jupyterlab/application-extension": "",
       "@jupyterlab/apputils-extension": "",

jupyterlab/_version.py

@@ -12,7 +12,7 @@ VersionInfo = namedtuple('VersionInfo', [
 ])
 
 # DO NOT EDIT THIS DIRECTLY!  It is managed by bumpversion
-version_info = VersionInfo(3, 0, 0, 'beta', 8)
+version_info = VersionInfo(3, 0, 0, 'candidate', 0)
 
 _specifier_ = {'alpha': 'a', 'beta': 'b', 'candidate': 'rc', 'final': ''}