Issue #698

This fixes an error in the case that extra properties have been added to
the array prototype.

- W motion
- text object system
- esc to abort partial commands
- various minor changes

% motion fails on nested parens/brackets of the same type.

Functionally no change, just much better style.

Use this in the VIM mode to make the cursor wide in escape mode.

This makes it easier for alternative keymaps to hook into it.

$ now goes not till the end of line, but one symbol before it (so e.g.
$i works as in vim now)

define per-character key-bindings in a function, instead of a loop
(where local variable "m" was bound to the last value in loop - see
line 203 in original source - so the prefix-d' and prefix-y'
key-bindings were useless)

do not raise js error when mark is not set (for prefix-d' and
prefix-y' maps)

Added a list of implemented and major not implemented key-bindings at
the top

Added commands: de, dd, P, f, t, df, dt, F, T, dF, dT, cf, ct, cF, cT,
gg, s, ce, cb, r, D, cc

Make character bindings work for maps that define a nofallthrough.

| is not fully correct (works on literal characters, not screen characters, so tab will provide different semantics).
^ is fully correct, I believe.
I has had its semantics fixed (to go to the correct place in the line).

Signed-off-by: Jan Keromnes <janx@linux.com>

Signed-off-by: Jan Keromnes <janx@linux.com>

Courtesy of Soumen Basak

Issue #274

Signed-off-by: Jan Keromnes <janx@linux.com>

Implement a minimal set of Vim keybindings: basic char/line motions with
counts, undo/redo with counts, and the basic insert switch.