Merge remote-tracking branch 'keisen/develop' into develop
Add sample of quick-sort
Merge remote-tracking branch 'origin/sample-qsort' into develop
Refactor append function
Merge remote-tracking branch 'origin/sample-qsort' into develop
Expand sorting sequence
Merge remote-tracking branch 'origin/sample-qsort' into develop
Rewrite select function using `cons' instead of `append'
Merge remote-tracking branch 'origin/sample-qsort' into develop
Format append function
Merge remote-tracking branch 'origin/sample-qsort' into develop
Fix bungles
Merge remote-tracking branch 'origin/sample-qsort' into develop
Expand target sequence by `times' function
Add lessp predicate to qsort's parameter
Improve REPL editing with readline
Merge remote-tracking branch 'origin/easy_repl' into develop
Rename `ml_read' to original `read' with static specifier
Merge remote-tracking branch 'origin/easy_repl' into develop
Flatten qsort function with new append3 function