v0.2.4

What's Changed

• chore: fix linter issues by @mattstam in #150
• fix(vapp): use checked add / sub for balance adjustments by @mattstam in #148
• fix(vapp): increase storage bits by @mattstam in #149
• chore(vapp): prover_owner variable name for clarity by @mattstam in #151
• feat: prove script by @jtguibas in #153
• feat(vapp): transfer fee by @mattstam in #152

Full Changelog: v0.2.3...v0.2.4