Don't freeze Atom editor with big-count-motion

[t9md]

This was long lived bug.

• Also happens in original vim-mode 1111111111111111111111111j throw exception in vim-mode.

Fix #560

Points to consider

• Use of Base::countTimes and its' derivatives.
• Big count was given to Motion
• Big count was given to TextObject
  • Count support for textObject is very immature state though(v999999999ip freezes).
• Count insertion e.g. 1 0 i then type abc then escape.
  • Found pure vim(checked by MacVim(vim8) in GUI) also freeze in this scenario.
  • Giving a big count freezes editor.
  • Applied to all child classes which have @supportInsertionCount set true.

[TODO]

• Eliminate use of @countTimes from Motion.
• Fix text-object
  • Fixed very imperatively, dirtily
    • Count specified in multi-selections and one of its fail stops other selection expand.
    • But I think it's far better than freezing editor.
  • No spec was added(I don't want to spend my time for this now, since count support of text-object is not well supported/defined yet).
• Fix operator-insert.coffee
  • 💣 Limit max insertion count to 100 to avoid accidental 5555555555555i freezes editor.

[t9md]

🎉🎉🎉🎉🎉🎉🎉

DONE, NO more freeze( I hope )!!!

🎉🎉🎉🎉🎉🎉🎉