Update to TypeScript 2.5

[kitsonk]

Enhancement

This is the issue for updating to TypeScript 2.5.

There are not any specific features of TypeScript 2.5 that we wanted to take advantage of, so mostly it is a maintenance upgrade. The one of note is that we can now just write } catch { instead of } catch (e) { if we are not doing anything with the error, as per a future ES spec.

The repos:

• [ ] dojo/cli
• [ ] dojo/cli-build
• [ ] dojo/cli-create-app
• [ ] dojo/cli-create-widget
• [ ] dojo/cli-export-project
• [ ] dojo/cli-test-intern
• [ ] dojo/core
• [ ] dojo/dgrid
• [ ] dojo/has
• [ ] dojo/i18n
• [ ] dojo/interfaces
• [ ] dojo/interop
• [ ] dojo/loader
• [ ] dojo/routing
• [ ] dojo/shim
• [ ] dojo/static-optimize-plugin
• [ ] dojo/stores
• [ ] dojo/streams
• [x] dojo/widget-core
• [ ] dojo/widgets
• [ ] dojo/dojo2-package-template
• [ ] dojo/grunt-dojo2
• [ ] dojo/grunt-dojo2-extras
• [ ] dojo/test-extras
• [ ] dojo/web-editor

[kitsonk]

Now that TypeScript 2.6 is RC we should skip 2.5 and move to 2.6.