Merge pull request #47 from rstudio/feature/environment-improvements

Improve environment pane handling of large objects and long vectors
Merge pull request #48 from rstudio/feature/environment-improvements

Filter objects in the environment by name or value
Merge pull request #49 from rstudio/feature/environment-improvements

Fix highlighting bug when returning to unfiltered state; make highlight color more subtle
use longer pulse for environment changes and include name column
Merge pull request #50 from rstudio/feature/longer-environment-pulse

use longer pulse for environment changes and include name column
local history for browse prompt
Merge remote-tracking branch 'origin/master' into feature/environment-selector
make function-local environments selectable while debugging