v0.15.2

What's Changed

• fix(core): check for env signature instead of trying to verify by @jrriehl in #503
• fix(core): add timeout and retries to almanac api registration by @jrriehl in #505
• chore(core): verify sync envelope if signed by @jrriehl in #507
• chore(core): bump version to 0.15.2 for release by @jrriehl in #506

Full Changelog: v0.15.1...v0.15.2