taskopen does not honour $EDITOR any longer
Hello, 

few days ago I pulled latest taskopen and noticed that it does not honour my old setup and when I e.g. issue:

```
open someid
```

taskopen launches **gedit** editor instead of **vim**.

Here is my taskopenrc file:

```
#!/bin/bash

BROWSER='firefox'
EDITOR='vim'
TASKBIN='task'
# If you sync tasks FOLDER should be a location that syncs and is available to
# other computers, i.e. /users/dropbox/tasknotes
# FOLDER to store notes in, must already exist!
FOLDER="/home/gour/task/notes"

# Preferred extension for tasknotes
EXT=".txt"

# Message that gets annotated to the task to indicate that notes exist
NOTEMSG="Notes"

# Command that opens notes. UUID will be replaced with the actual uuid of 
# the task.
# Default is: $EDITOR ${FOLDER}UUID$EXT
NOTES_CMD="$EDITOR ${FOLDER}UUID$EXT"

```

For now solution was to revert with:

```
git co v1.0.2
```

Any hint?

Let me add that my (fish) shell also sets:

```
set -g -x EDITOR "vim"
```

which is confirmed with:

```
$ echo $EDITOR
vim
```
