Fix editor TestInit
Don't use global ed variable inside Editor methods
Merge branch 'master' of github.com:limetext/lime

* 'master' of github.com:limetext/lime:
  backend/log: Ran tasks/build/fix.go + remove test log output file.
  Run `gofmt` on log tests
  Expanded test suite for the log package in Lime Text submitted by schallert, jchoi1, lindzy, shuaisha, & dingty