Related #317

Close #317

Close #312

so that it doesn't corrupt file that doesn't end with a new line
character. Close #311.

    > time cat /tmp/list | fzf-0.10.1-darwin_amd64 --ansi -fqwerty > /dev/null

    real    0m4.364s
    user    0m8.231s
    sys     0m0.820s

    > time cat /tmp/list | fzf --ansi -fqwerty > /dev/null

    real    0m4.624s
    user    0m5.755s
    sys     0m0.732s

    > wc -l /tmp/list2
     2594098 /tmp/list2

    > time cat /tmp/list2 | fzf-0.10.1-darwin_amd64 -fqwerty > /dev/null

    real    0m5.418s
    user    0m10.990s
    sys     0m1.302s

    > time cat /tmp/list2 | fzf-head -fqwerty > /dev/null

    real    0m4.862s
    user    0m6.619s
    sys     0m0.982s

Close #310

Related #305

Fix #305. ncurses can crash on invalid $TERM. fzf-tmux uses bash on
a new pane so we have to make sure that the $TERM is consistent with
that of the hosting shell.

Close #303

Close #303

This reverts commit 6166e2dd.

Close #299

- CTRL-D - delete-char/eof
- DEL - delete-char

Close #289