chore: bump version to 0.3.1

[Acktarius]

No description provided.

[roomote-conceal-network]

2 issues outstanding. See task

• android/build.gradle:13,24 — library version/versionName still 0.2.8; version bump to 0.3.1 left the Android artifact metadata stale (thread)
• CHANGELOG.md — release table stops at v0.2.8; no rows for v0.3.0/v0.3.1

Code review — chore: bump version to 0.3.1

#	Severity	File	Line(s)	Issue
1	🟡 Medium	android/build.gradle	13, 24	Version bump incomplete: Android version/versionName pinned at 0.2.8, lagging the npm package (package.json is now 0.3.1). Consider deriving from package.json like ConcealCrypto.podspec does.
2	🟢 Low	CHANGELOG.md	3-11	Release table has no entries for v0.3.0 or v0.3.1.

Otherwise the bump itself is consistent (package.json and both package-lock.json locations match, tag v0.3.1 exists, podspec reads the version from package.json).
_{Reviewed 80446ca}

[roomote-conceal-network]

The version bump is incomplete: android/build.gradle still pins the library version at 0.2.8 (version = '0.2.8' on line 13 and versionName "0.2.8" on line 24), so the Android artifact metadata now lags the npm package by three patch releases. Consider sourcing it from package.json (like ConcealCrypto.podspec already does) so future bumps stay in sync:

Suggested change

	"version": "0.3.1",
	"version": "0.3.1",

(along with updating android/build.gradle:13,24 to 0.3.1 in the same commit)