improve ->i syntax error message when dependencies are cyclic
make c:x;c:f keybinding use file-menu:open-callback (when it can)
add SSL Server Name Indication support
define and use TLSEXT_NAMETYPE_host_name
add client SNI tests
fix undefined field in odbc connection
  closes PR 14490
Fix typechecking of andmap/ormap on dotted lists.
Minor cleanup on app of list.
Make tc-literal tests actually include all of the tests.
Make a subst-tc-results.
Move replace-names from tc-metafunctions to tc-subst.
add drracket:default-filters and drracket:default-extension support
use drracket:default-filters and drracket:default-extension in datalog
Cleanup function type creation in tc/rec-lambda/check;
Fix name escape in tc/rec-lambda/check.
Delete case in tc-expr which is not needed.
Make update do actual structural recursion over the path.
Cleanup env+.
Cleanup combine-props.
Make implied-atomic work on AndFilters as well.