Bump version to 0.2.3
Bump version to 0.2.3

kinnalru/gitcrypt,kinnalru/gitcrypt,candeira/git-encrypt,sergey-ob/git-encrypt,spector-in-london/git-encrypt,janzhou/git-encrypt,miraclhq/git-encrypt,almendro/git-encrypt,marcind/git-encrypt,denis-vilyuzhanin/git-encrypt