* levels: minor fixes.
E1M3
- Nukage level in the bridge before the blue key was too log, resulting in not only a texture misalignment on the safety lift but also making a secret inaccessible.
- Fixed the tutti-frutti and misaligned terminals near sector 255.
E1M4
- Potential soft-lock if jumping out the window in the starting area. That outside area now has a one-way route back to the map start. (It is still totally inaccessible in vanilla and thus there are no new pickups or monsters there, and the door is "secret" on the map even though it doesn't actually award any secret to open it.)
Map09
- Moved the rocket launcher secret in the southeast to connect with the path leading up to it, preventing the need for an extremely precise jump to get in even when you know where it is.
* levels: change map01 secret sector tag.
The secret tag was on the door sector itself, which made it easy to accidentally jump over it via the raised platform in front of the door so it wouldn't be triggered properly until you were on your way out. The secret tag is now on the little corridor instead.
* levels: fix Map10 issues.
Map10
- Changed the line special in the western super shotgun secret to keep the door sector itself from also becoming a secret sector, while fixing the texture alignment inside the secret itself.
- Moved some shotgun shells to stop them from floating above the sectors directly below where they appear to be.
Edits to E1M4 by me and m.
Removed superflouous doorway in first room, changed lobby in yellow key building, changed outdoor area to look nicer, other minor tweaks.
A generic term like this isn’t really suitable for trademark, nor
likely to ever be disputed. The community and the engine both heavily
bias toward “episode” and indeed most other games do.
Closes: #682
