v0.5.1

What's Changed

• PVM Hostcalls: Fix invoke for 64-bit changes
• PVM: Complete initialization renames
• PVM: Clean up wording of memory init
• PVM Invocations: W_X should be W_M
• PVM: Simplify initialization memory layout
• PVM Invocations: W_X should be W_M
• PVM: Simplify initialization memory layout
• PVM Hostcalls: Error in bless if services are out of range
• Overview: Common Era moves to 2025
• Accumulation: Correct language around "state characterization"
• WP&WRs: Introduce second gas limit for Accumulate
• WP&WRs: More sensible Work Report size limit
• PVM: Don't forget the instruction counter in prototype
• BEEFY: Use a more optimal BEEFY MMR commitment format
• WP&WRs/Merklization: Clean up functions and correct use of page prefix
• Definitions: Update gas limits

Full Changelog: v0.5.0...v0.5.1