Preservation of ALMxIF bit impossible

[TheTesla]

The ALMxIF bit cannot be written to a 1 in software. Writing to the ALMxWKDAY register will always clear
the ALMxIF bit.

(datasheet, https://ww1.microchip.com/downloads/aemDocuments/documents/MPD/ProductDocuments/DataSheets/MCP7940N-Battery-Backed-I2C-RTCC-with-SRAM-20005010J.pdf)

MCP7940/src/MCP7940.cpp

Line 689 in c2b352b

((1 << MCP7940_ALM0IF) | (1 << MCP7940_ALMPOL)); // Keep ALMPOL and ALMxIF bits