Environment

Sets generic Zsh built-in environment options.

Also enables smart URL-pasting. This prevents the user from having to manually escape URLs.

Uses .zimrc defined ${ztermtitle} variable to set the terminal title, if defined.

ZSH Options

Option	Effect
AUTO_RESUME	Resume existing jobs before creating a new job
LONG_LIST_JOBS	Use the verbose list format by default
NOTIFY	Report job status immediately instead of waiting for new prompt
INTERACTIVE_COMMENTS	Recognize comments starting with `#`
BG_NICE	Disabled to prevent jobs being given a lower priority
HUP	Disabed to prevent SIGHUP to jobs on shell close
CHECK_JOBS	Disabled to prevent job report on shell close