v0.4.0a

v0.4.0a:

* Improved HUD behavior for different aspect ratios

* Cursor tooltip hides on drag (F2 to show/hide)

* Added attribute examples to "show me" guides

* Blocked killing cells during tutorial to prevent accidentally breaking it

* Compacted nucleus inspector display

* Fixed plasmodia particle production stopping prematurely

* Fixed plasmodia immortality bug

* Minor description tweaks

* Substrate visual adjustments - neutral substrate is a soft violet, pH coloring takes priority, and nutrients now just add a subtle tintAs always, if the new version causes any issues, you can switch over to the previous branch for the previous build.