Users may add some texts in the image preview block around the image. In
this case, we should just delete the image and insert another preview
block.
Signed-off-by: Le Tan <tamlokveer@gmail.com>
1. `Ctrl + W`, `Ctrl + R`, `Ctrl + Q`, `Ctrl + S` for edit and view mode;
2. `Ctrl + E` to toggle expand view;
3. `Ctrl + N` to create note in current directory;
4. `Ctrl + H` in edit mode to delete previous char;
5. `Ctrl + W` in edit mode to delete till the start of previous word;
6. `Ctrl + U` in edit mode to delete till the start of current line;
7. `Tab`, `Shift + Tab` to indent or unindent selected lines;
8. `Ctrl + B`, `Ctrl + I` to make selected text bold or italic;
Signed-off-by: Le Tan <tamlokveer@gmail.com>
