Modpack refactor (#4)

Split this mod into a set of sub-mods in a modpack, and in the process did a whole bunch of renovations.

* updated Subterrane's API to allow for more patterned placement of things
* added "warrens"
* clean separation of flooded and non-flooded caverns
* rearranged biomes to make cavern layers more distinct
* added oil layer
* added underworld layer

ice_sprites/locale/template.pot

@@ -0,0 +1,50 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2018-12-24 16:51-0700\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: ice_sprites\init.lua:11
+msgid ""
+"Ice sprites are mysterious glowing insect-like creatures that appear to be "
+"made partly of crystalized water."
+msgstr ""
+
+#: ice_sprites\init.lua:14
+msgid ""
+"Ice sprites can be caught with nets and placed in bottles as sources of "
+"light and freezing cold."
+msgstr ""
+
+#: ice_sprites\init.lua:16
+msgid "A bottle containing a captured ice sprite."
+msgstr ""
+
+#: ice_sprites\init.lua:17
+msgid "Ice sprites radiate both light and freezing cold."
+msgstr ""
+
+#: ice_sprites\init.lua:22
+msgid "Ice Sprite"
+msgstr ""
+
+#: ice_sprites\init.lua:71
+msgid "Hidden Ice Sprite"
+msgstr ""
+
+#: ice_sprites\init.lua:109
+msgid "Ice Sprite in a Bottle"
+msgstr ""

ice_sprites/locale/update.bat

@@ -0,0 +1,6 @@
+@echo off
+setlocal ENABLEEXTENSIONS ENABLEDELAYEDEXPANSION
+cd ..
+set LIST=
+for /r %%X in (*.lua) do set LIST=!LIST! %%X
+..\..\intllib\tools\xgettext.bat %LIST%