Well, today I had several minutes of spare time and I used them to upload the Math-o-mir v.171 beta 2. You can download from http://www.datafilehost.com/download-da474755.html
There are not many news in this version. Here is the list:
- Distinction between text boxes and math boxes does not exist any more. Whether a line-wrap will be inserted by the Enter key or a new box will be created is determined from the box content, not from its type.
- Line-wraping for plain-text is implemented completely new way. As a result you can now have multi-line text inside table cells. This was a major job and I hope I did not introduce many bugs.
- Table cells can now have border lines
- The Toolbox is now customizable. The user can add its own elements into the toolbox (or subtoolboxes) – using the mouse, pick-up any element from the document, carry it to the (sub)toolbox and drop it there by right-mouse-click
- ‘Easycast’ is implemented… For every math item in the toolbox you can define the easycast key sequence. Later, when typing, you can invoke that item by typing the defined easycast sequence.
- The Enter key can now be used to wrap the plain text even during quick-typing
- The blinking cursor and the insertion points are now thicker for better visibility
- You can now use mouse double-click to start a box that has text-typing mode enabled
- the Shift+Spacebar is not used any more to toggle text/math typing mode (you use Alt+Spacebar for this purpose)
Anyway, let me know if you have any suggestion or bug to report.
Math-o-mir blog 
Been using this pretty consistently and it looks pretty solid! One thing I’ve noticed is that scrolling down with the mousewheel will occasionaly scroll sideways… not sure if that is a problem with me or not.
Thanks. The only new feature I plan to implement, before the official release, is a small control box (extension to the toolbox) that is only active during keyboard entry. The control box can be used to toggle keyboard/math typing mode and to insert line-wrap, column and row with a mouse click.
Did you notice the sideways scrolling only with the latest beta?
I have seen the scrolling issue before. Like I said, it might be something with my computer… not sure.
I’ve been noticing a case where the color of the cursor does not match the style of text I’m typing. It’s hard for me to isolate, but it seems to happen mostly when I try to insert text of a different style into an existing line of text. The cursor will be purple, but I’ll be typing in plain textstyle or vice versa.
Also, have you updated the matrix line widths so they do not get wider as the matrix gets taller? I think mine are still thickening.
Matrix line are still getting thicker, but to much less extent than before. Maybe I can make their thickness even less depending on the matrix height…
But, if I make their thickness totally fixed (so that it doesn’t at all depend on the height of matrix), then it doesn’t seem right to me.