Module glk::traits

Mostly safe rust traits for implementing the Glk spec, including optional modules. (https://www.eblong.com/zarf/glk/glk-spec-075_4.html).

Traits

Api	Dispatch trait for all Glk APIs. Each function returns a
Base	Mandatory Glk API functions.
Datetime	GLK_MODULE_DATETIME
Hyperlinks	GLK_MODULE_HYPERLINKS
Image	GLK_MODULE_IMAGE
LineEcho	GLK_MODULE_LINE_ECHO
LineTerminators	GLK_MODULE_LINE_TERMINATORS
ResourceStream	GLK_MODULE_RESOURCE_STREAM
Sound	GLK_MODULE_SOUND
Sound2	GLK_MODULE_SOUND2
Unicode	GLK_MODULE_UNICODE
UnicodeNorm	GLK_MODULE_UNICODE_NORM