Changes in version 1.5.0                        

    o   NEW FEATURES:
	+ Support sharing character vectors
	+ Support creating empty shared objects
	+ new paramters `shareAttributes` and `minLength` in package options
	+ new paramter `depth` in function is.shared
	+ R level developer API supports vector input
	+ add a safer memory check method before sharing an object on Linux
	+ Chinese vignette

    o   CHANGES:
	+ The package will not provide C APIs in this version
	+ The C++ APIs are not compatible with the old version
	+ is.shared function reports the sharing status of object
	  attributes by appending "Shared" to the end of attribute names.

                        Changes in version 1.3.8                        

    o   Support complex

    o   Support pairlist

    o   Use memcpy to copy the data when possible

                        Changes in version 1.3.7                        

    o   change the parameters of is.shared function

    o   `mustWork = FALSE` by default, no error will be given
	 when sharing a nonsharable object

    o   Support environment object

                        Changes in version 1.3.6                        

    o   Support S4 object

    o   new dispatching method(signiture "ANY") for share, unshare and is.shared functions

                        Changes in version 1.1.6                        

    o   Add memory check on Linix system

                        Changes in version 1.1.1                        

    o   Refactoring code

    o   Add supports for package developer at C++, R levels

                        Changes in version 1.0.0                        

    o   Publish in Bioconductor

                       Changes in version 0.99.2                        

    o   Clean some formating issues

                 Changes in version 0.99.0 (2019-05-16)                 

    o   Submitted to Bioconductor