tio: update to 1.36.

=== tio v1.36 ===

Changes since tio v1.35:

* Add support for defaults in config file

  If no section name is specified the configuration will be considered the
  default one.

  This allows to set e.g. a default color code for sections which do not
  configure a color code.

* Handle SIGHUP

  Handle SIGHUP so that the registered exit handlers are called to restore
  the terminal back to its orignal state.

* Add color configuration support

* Bypass unused result warnings

* Force dependency on libinih

  Configuration file support is considered a mandatory feature.

* Update headers

* Update AUTHORS

* Update man page

* Move string_to_long() to misc.c

* Update CircleCI config

* Update tio gif

* Update README

* Update LICENSE date

* Remove redundant COPYING file

Liam Beguin:

* Document configuration file options

* Add support for a configuration file

* misc: add _unused macro

  Some parameters are expected to be unused.
  Add a basic macro to mute these compiler warnings.

* options: expose string_to_long()

  Expose string_to_long() so that other source files can use it.

(fcambus)