Update to 2019.10

• Pet portlint, portclippy & portfmt.

Changelog:

• deprecate some old functionality
• cleaner separation of time/date handling functions
• clearer separation of random number generation
• bug fixes to floating point encode/decode
• better stack over/underflow error reporting
• fixed a bug related to using a custom image when other command line flags were passed
• improved the assembler
• supports both 64-bit and 32-bit cell sizes

PR: 241575
Submitted by: Charles Childers <crc@forthworks.com>