Set tangle property in first heading

This seems to solve a long-standing (~1yr) problem I've been having
that I've never actually bothered to look into. Is it a bug? A
file-level property didn't seem to fix it.
Set path by inspection of $PATH in a new shell process
Hack to get correct path
.
Improve highlight function
Generalize $PATH set function and use to set $PYTHONPATH
keys
scratch buffers
New functions -- shell-command-on-file, indent-region
Improve python prep-for-paste function
Remove counsyl material
.
Generalize pretty-lambdas
Revert "Generalize pretty-lambdas"

This reverts commit 7d921973c4cefefd780a283f9ac8ae086a4a01c5.
Wrap python chunk with debug/query info
org-src face hacks
yas snippets
[EXPERIMENTAL] python wrap functions
where-am-i
opacity