Reload causes New Tab to spawn multiple tabs

• I am on the latest Hyper.app version

• I have searched the issues of this repo and believe that this is not a duplicate

• OS version and name: MacOS 10.13.3

• Hyper.app version: 2.0.0.canery11

• Link of a Gist with the contents of your .hyper.js: Link

• Relevant information from devtools (CMD+ALT+I on macOS, CTRL+SHIFT+I elsewhere): On each Reload a message (re)loading renderer plugins appears for each Reload that I have done (exponential growth)

• The issue is reproducible in vanilla Hyper.app: yes, I don't use plugins

Issue

1. Open a new Hyper Window
2. Reload the Tab (e.g. by pressing Ctrl+R)
3. Open a new Tab (e.g. by pressing Ctrl+T)
4. Two new tabs open
5. Reload the Tab (e.g. by pressing Ctrl+R)
6. Open a new Tab (e.g. by pressing Ctrl+T)
7. Three new tabs open ...