gitpage v1.0.10

git仓库翻页，默认在master分支操作

• gitpage l <pagesize = 1>，checkout至当前commit之前
• gitpage r <pagesize = 1>，checkout至当前commit之后
• gitpage -，checkout至最新commit

• gitpage .，checkout至初始commit

• --branch <branch>，checkout在<branch>分支上进行