ipv6 address must be specifid surrounded by [], like [ipv6_address]:port,
since otherwise impossible to disambiguate colons separating ipv6 quads
from the colon delimiting port
When multiple negative heal abilities are present, the game now
chooses the ability with the lowest value. The leadership ability
now also uses the same get_composite_value function that is also
used by most other abilities
It has been a while since the last optipng run (it was in 2015),
and many non-optimized PNG files have accumulated in the repository.
288 of 1666 files optimized, 258992 bytes reduced to 156258 bytes; -102734 bytes, -39.66%
To avoid unnecessarily increasing the size of Git repository for minor
size reductions, we skip images that weren't reduced by at least 15%.
Icon [short_arrow_left_25-pressed.png] exists, but is not used anywhere.
Widgets in [menu_button_default.cfg] and [multimenu_button_default.cfg]
were using [short_arrow_left_25-active.png] for the "pressed" state.
The new syntax (using calculate= in the path options table) allows simultaneously setting the other path options, while there is no way to do so with the old syntax (passing the cost function as the last argument instead of the path options table).
We also remove the line allowing for an additional boolean argument to set ignore_teleports=. It does not make sense to single out this option from the others. Furthermore, this line makes it default to the opposite of the (more intuitive) default of the new syntax. For the record, this argument has not been in any released version yet and is not yet documented on the wiki.
The old syntax for using a custom cost function ignored teleports/tunnels. Using calculate= in the path options table allows also setting the ignore_teleports option (but in this syntax it defaults to 'false', so it does not need to be done specifically).
