esp-develop-20210220

• Rebased on top of QEMU 5.2.0, fixed breakage/deprecations, adapted ESP32 patches to meson build system.
• Added RSA peripheral based on libgcrypt.
• Added flash encryption and decryption.
• Added I2C peripheral (based on #11).
• Enabled FPU coprocessor instructions for ESP32 core.
• eFuse: fixed write operation wiping previously written bits.
• SHA: fixed internal state not being reset when START register is written.
• UART: simplified autobaud implementation, added RXFIFO_TOUT interrupt, added MEM_RX_STATUS register, exposed UART1 and UART2 devices.
• esp32: fixed IRAM memory range, resolving the issue with loading esptool flasher stub.
• esp32: updated ROM to ECO3 version.
• timers: fixed compilation warnings.

esp-develop-20200528

• Rebase to QEMU v5.0.0 release
• Fix LACT timer register access (fixes #7, thanks @peragwin)
• Add partial FPU support (FPU2000 instructions only)

esp-develop-20191228

• Rebased to QEMU v4.2.0 release
• Implemented cache illegal access interrupt
• Implemented TIMG watchdogs
• Fixed interrupt matrix not being reset properly
• Fixed APP CPU not resumed when the stall flag is cleared
• Fixed APP CPU stall state IRQ not cleared when DPORT is reset