New epilogue engine

See merge request spnati/spnati.gitlab.io!1148

Also adds support for arbitrary css, which I forgot to put in before

Generate behaviour.xml with tags/situations as well as condition attributes in a well-defined order

Closes #40

See merge request spnati/spnati.gitlab.io!1147

Save and load all options (especially player tags)

See merge request spnati/spnati.gitlab.io!1158

Simpler prefetching of images

See merge request spnati/spnati.gitlab.io!1086

Substitute italics in game etc.

See merge request spnati/spnati.gitlab.io!1112

Kizuna AI, character #139, has joined the game!

Explicitly specify where to insert blank lines between elements to get consistent results (not completely the same the results as before, though).

# Conflicts:
#	opponents/make_xml.py

(Means tabifying make_xml.py to make it runnable with python3.)
# Conflicts:
#	js/spniCore.js
#	opponents/make_xml.py

Add epilogue metadata to meta.xml for all characters with epilogues.

See merge request spnati/spnati.gitlab.io!1161

Support for advanced ending conditions in make_xml.py and including epilogue metadata in meta.xml.

See merge request spnati/spnati.gitlab.io!1142

-Adjusts masturbation
-Typo Fixes

Amendments to !867

See merge request spnati/spnati.gitlab.io!1153

Jura Nipple Revamp

See merge request spnati/spnati.gitlab.io!1159

TODO: What to do if we decide to use color pickers for the hair and eye color again, but only on browsers where those work? We'd need to be able to save either a color value or a tag name.

To make loading tag choices simpler, they are saved as an object, and only a singular value is saved per choice, with implicit tags added when proceeding to the game screen.

Also make the form generation code easier to read with the help of DOM objects and jQuery.

TODO: Save the precise input skin color slider value instead of the tag.

It seems that they might compete with still needed images otherwise.

Replace 0-joy.png

See merge request spnati/spnati.gitlab.io!1156

Fix italics tag.

See merge request spnati/spnati.gitlab.io!1157