Release names of 0.2.x are inconsistence with 0.1.x

[niheaven]

Hi, have you accidentally added a blank in release CI? See file names in pget_checksums.txt and release page, there's a blank after pget_ for every archives (.tar.gz and .zip), e.g. pget_ 0.2.1_Windows_x86_64.zip, and in release page of GitHub, they become dot ..