With this commit it is possible to activate a smoother scrolling
by setting smooth_scrolling in the zathurarc file to e.g. 2.0.

This patch appends slashes to directories in cc_open. In addition
lines in zathurarc that do not end with a new line won't be
ignored anymore.

Thanks to Trundle

This commit does not allow every shortcut
when the buffer is not empty

Thanks to vimprobable

This commit makes it possible to define and use special keys
like <Space> on their own or in combination with a modifier:
<C-<Space>>.

In addition the evaluation of the keypress has been changed, so
that the order of the bindings do not matter any longer.

This patch checks the length of a line in the zathurarc file: If
the line is empty it wont be processed to prevent a segmentation
fault.

Thanks to escherdragon.

Conflicts:
	zathura.c

It is now possible to define an argument and an additional
mode for the mapping.

This commit introduces a shortcut list that is used
now to check given keybindgins: On the contrary to
the static shortcut array it can be easily modified
and extended.

In addition some malloc-checks have been introduced
and a named shortcut list that will be used to evaluate
the cmd_map parameters.

This commit makes it possible to use zathura inside of tabbed by
running zathura with the -e argument.

This commit makes much more settings available in the
zathurarc file.

This hack checks if the PDF file is damaged when
zathura tries to automatically reload it. Now even
if the document is damaged, zathura does not close
the current document session.

With this changes it is possible to set the colors
with the :set function.

It is now possible to scroll one page or an half page up or down.

This fix makes it possible to open URIs containing
multiple arguments.

Thanks to Dennis Felsing