Janet 1.18.0

[bakpakin]

• Allow ev/cancel to work on already scheduled fibers.
• Fix bugs with ev/ module.
• Add optional base argument to scan-number
• Add -i flag to janet binary to make it easier to run image files from the command line
• Remove thread/ module.
• Add (number ...) pattern to peg for more efficient number parsing using Janet's
  scan-number function without immediate string creation.

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This discussion was created from the release Janet 1.18.0.