Fix off-by-one in select_text() on libvte >= 0.55.0

Version 0.55.0 rewrote the selection bounds and made them non-inclusive
of the end-position. Take this into consideration.

Add a cell_height_scale and cell_width_scale option which is supported
since vte3 0.52.

Make F11 only go fullscreen when no other modifier such as shift/ctrl is
pressed.

vte_terminal_match_set_cursor_type is deprecated, use the new
vte_terminal_match_set_cursor_name function introduced in 0.40

This silences a QA warning on Gentoo and should reduce the risk of MITM
attacks against users.

Add bold_is_bright option

Document GTK's 'great' emoji input keybinding

Revert "Use std::make_unique from c++14 #360"

This reverts commit 8dd8f55088.

The make_unique function in util/memory.hh is not at all like
std::make_unique. The former is just a plain wrapper for the unique_ptr
constructor and makes the resulting unique_ptr take ownership of the
instance identified by the given pointer.

std::make_unique on the otherhand allocates a new instance of a given
type and makes creates a unique_ptr that has ownership of that instance.

So what the patch did was to allocate a char pointer, that did not
point at the string we're interested in, but instead points at the
pointer that points to that string. This means that the string that was
meant to be freed by the unique_ptr upon leaving its scope leaks.

Additionally, the check in open_selection() wasn't adapted to handle
the extra layer of indirection added by this change, so it always
assumed that there was some selection, and tried to open it, completely
breaking mouse usage.

Remove geometry

Use std::make_unique from c++14

Fix the breakage introduced in 01bfd9f9ea

Set title to passed command when executing with -e

Prevent a segfault when trying to open a selection, when there is no
selection.

This reverts commit 86db8ab133, reversing
changes made to 1f9ab29f74.

fixed a segfault on attempting to open a void selection in a newly op…

Need to fall back to check_match after hyperlink_check_event

vte_terminal_hyperlink_check_event only matches explicit OSC 8 marked
hyperlinks, so we still need to fall back to the existing check_match
function for the vast majority of URLs to be clickable.

Signed-off-by: Johannes Löthberg <johannes@kyriasis.com>

More info:

https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda

https://bugzilla.gnome.org/show_bug.cgi?id=779734

Update the installation part with a dedicated one for Arch. Use wget
instaed of scp for adding the terminfo to the server.

Add optional scrollbar

Vim movement top middle bottom

Vim movements H, M and L implemented and documented.

Add ^L to reset and clear

Fix order of arguments in tic command

hanetzer in #gentoo-chat on freenode reported errors like this when building
termite-12:

    tic -x termite.terminfo -o /tmp/portage/x11-terms/termite-9999/image//usr/share/terminfo
    tic: Too many file names.  Usage:
        tic [-e names] [-o dir] [-R name] [-v[n]] [-V] [-w[n]] [-1aCDcfGgIKLNrsTtUx] source-file

Moving the input filename to the end of the tic invocation seems to resolve
this for them, but I am unable to reproduce the issue.

improving shell detection

Handle invalid configuration file format

Print an error when an invalid key/value config is given to termite.

Closes: #486

Describe the new keybindings e and E to move forward to end of word.

Add keybinding to move forward to end of word

Closes #495