Developers: Please add descriptions of your changes to this PR as your PRs are merged into Dev

Added

• FireMarshal support for FPGA prototypes (VCU118 FPGA Updates + FireMarshal on Prototypes #849)
• Hammer update to include power estimation flows, rail analysis, hierarchical sim support, and improved ASAP7 plugin with dummy SRAMs (Hammer Updates #886)
• Docker image
• Support specifying architecture when building tools. (Support specifying architecture when building tools. #802)
• Add Config fragments: WithMultiRoCCFromBuildRoCC, PMP (Add WithMultiRoCCFromBuildRoCC to make heterogeneous accelerator configs easier #809, Add fragment to configure PMPs #821)
• Add support for simulating an AXI memory interface over the default TL serial link (AXI Memory Over TL Serial Link #812)
• Add option to add async queues between chip-serialIO and harness serdes (Add option to add async queues between chip-serialIO and harness serdes #828)
• Spike support for multiple extensions, and add sha3 spike model to esp-tools (Bump esp-tools (March 2021) #837, GNU Toolchain Revert #897)
• Default generator support for I2C and PWM (Add default support for I2C and PWM IOs. #885)

Changed

• Gemmini bump to version 0.5
• FireSim bump to version 1.12
• FireMarshal bump to version 1.12
• Changes default FireSim frequency from 3.2 GHz (dual clock domains) to 1 GHz (single clock domain)
• Bump pygments from 2.2.0 to 2.7.4 in docs
• Hammer tutorial example is now a TinyRocketConfig (Hammer Updates #886)
• Sha3 Spike model moved from sha3 repo to esp-isa-sim

Fixed

• Avoid permissions conflict on shared protocjar.webcache (Avoid permissions conflict on shared protocjar.webcache #774)
• Passing MBus clock frequency to SimDRAM (Passing MBus clock frequency to SimDRAM #790)
• Fix parsing of --ignore-qemu option (Fix parsing of --ignore-qemu option #791)
• FPGA Prototype - Support Adding Pullup R's to Bringup GPIOs (FPGA Prototype - Support Adding Pullup R's to Bringup GPIOs #806)
• Use "tile" instead of "core" to assign frequencies in WithTileFrequency config. fragment (Use "tile" instead of "core" to assign freq's in WithTileFrequency config. fragment #807)
• Fix IOCell generation for clock and reset to use IOCellKey (Fix IOCell generation for clock and reset to use IOCellKey #824)
• Fix TileResetCtrl to be ahead of reset synchronizers (Fix TileResetCtrl to be ahead of reset synchronizers. #826)
• Fix memory alignment in character count RoCC test (Fix memory alignment in character count RoCC test #853)
• Synchronize JTAG reset to JTAG.TCK. (Synchronize JTAG reset to JTAG.TCK. #859)
• Updates to system requirements scripts (Requirement Scripts Update #874)
• Rocket-dsp-utils integration and cleanup for dsptools (Integrate rocket-dsp-utils (formerly dsptools/rocket subproject) #888)

Removed

• Dummy DCO collateral from Hammer tutorial example (Hammer Updates #886)