Changes in version 1.1.0 (2025-11-28)                  

    o   support multiple-word option

    o   subpport sub-commands

    o   fixed a bug when `argv_str` is NULL

                 Changes in version 1.0.3 (2020-10-01)                  

    o   fixed a bug of setting "verbose!" and with TRUE for verbose as default

                 Changes in version 1.0.1 (2020-07-05)                  

    o   fixed a bug of testng folders

    o   directly use .md files under solaris

                 Changes in version 1.0.0 (2020-06-10)                  

    o   Re-implement options by reference class.

    o   Support specification by a template.

    o   Support help message of sub options.

                 Changes in version 0.1.8 (2020-01-08)                  

    o   `qq()`/`qqcat()`: multiple text templates can be specified.

                 Changes in version 0.1.7 (2018-06-10)                  

    o   update dependency of GlobalOptions package

    o   `code.pattern` can be a vector that all patterns are searched.

    o   add `get_scriptdir()`

    o   cat_format_line(): first wrap text into a variable then print it out

                 Changes in version 0.1.6 (2017-03-06)                  

    o   logical options can have default values.

    o   add `cat_strwrap` option in `qq.options()`

    o   text are properly wrapped for the command message

    o   add `script_name` option to set alternative script name

                 Changes in version 0.1.5 (2016-09-26)                  

    o   head and foot of the message are properly wrapped.

    o   qqcat: text are wrapped with fixed width per line by default

                 Changes in version 0.1.4 (2016-08-14)                  

    o   add `head` and `foot` arguments in `GetoptLong()` which set the head and foot
	of the help message

    o   change vignette format to Rmd

                 Changes in version 0.1.3 (2016-04-23)                  

    o   use `interactive()` to test whether under command-line mode

    o   update according to testthat 1.0.0

                 Changes in version 0.1.2 (2016-03-25)                  

    o   update option functons with new version of GlobalOptions

    o   set `source()` as internal

                 Changes in version 0.1.1 (2015-12-04)                  

    o   add `source` which also allow specifying arguments in interactive session.

                 Changes in version 0.1.0 (2015-03-09)                  

    o   depends on `methods` package

    o   add `GetOptions` which is the same as `GetoptLong`

                 Changes in version 0.0.9 (2015-01-29)                  

    o   modified tests according to changes of `GlobalOptions` package

                 Changes in version 0.0.8 (2014-11-06)                  

    o   check atomic vector in `qq`

    o   If the interpolated variable is equal to NULL, it will be converted to "".

                 Changes in version 0.0.7 (2014-10-11)                  

    o   vignettes are rendered by knitr

    o   use `GlobalOptions` package to take care of the global settings

    o   default value can be set to NULL if it is optional

    o   if the option is designed as named list and has default value. Elements that are 
	not specified on command-line will be kept with their default values.

                 Changes in version 0.0.6 (2014-08-19)                  

    o   default value can be set as a list if the option is specified as opt=[sifo]%

                 Changes in version 0.0.5 (2014-07-30)                  

    o   use a global variable which is a flag of whether it is under command-line or not.

    o   If in interactive session and there is error, the session will be quite while
	throw error instead.

                 Changes in version 0.0.4 (2014-06-17)                  

    o   add `cat_prefix` argument in `qqcat` which is prior than `options('cat_prefix')`
	and not globally effective.

                 Changes in version 0.0.3 (2013-12-10)                  

    o   If command-line variable is a list, enforce the order of names of elements to 
	be alphabetical (in testing file, tag=%i).

    o   `help` and `version` will not be exported.

                 Changes in version 0.0.2 (2013-11-28)                  

    o   add `collapse` option in `qq` so that `qq` can return a vector instead of
	only collapsing them into one string.

                        Changes in version 0.0.1                        

    o   the first release