- It should now be possible to build bridges over frozen water tiles just as over regular water tiles.

- Eliminated the possibility of marshes on new permafrost biome maps. (This change does not, of course, affect maps already generated.)

- Marsh, like river and lake water, can now freeze in cold weather.

- Shallow water adjacent to marsh will no longer treat the marsh as a shore when freezing.

- Fixed a minor issue in the ice thaw code, so thawing should now be a bit less piecemeal.

- Initial release.