Log Message:
entr: Update to 4.8

Changes:
4.8
---
 - Set a maximum of 2^19 watches to guard against absurd file open limits on
   MacOS
 - Use control sequences to clear the display and specify '-c' twice to erase
   the scrollback buffer

4.7
---
 - Use system file descriptor limits when max_user_watches is not accessible
 - Return the exit status of the child process when the '-z' option is used
 - Handle SIGHUP so child process are terminated when a terminal is closed
 - More accurately return shell exit code using '-s' option