[feature request] - GHex functionality

[fssrepository]

1. I think the GHex is a best binary editor, but nothing fancy on it, to edit under the cursor is a little bit less user-friendly. GHex solved the issue to be able to enter in "edit mode" and you can type in like in a text editor either in hex or in byte format. Sometimes the bit would be also a good one.

2. The plugin can be improved also to make some binary calculator popup there. Many times programmer would like to see what 1 >> 3 mean etc. So in edit mode make binary calculation under the cursor's value. I have seen a popup which shows in a different format but not in bitts the selected character.

The first one is definitely matters, that's why I'm using the ubuntu Ghex instead of this one.