v0.5.2

• Add git lfs fetch command for downloading objects. #285 (@rubyist)
• Fix git lfs track issues when run outside of a git repository #312, #323 (@michael-k, @aorjoa)
• Fix git lfs track for paths with spaces in them #327 (@technoweenie)
• Fix git lfs track by writing relative paths to .gitattributes #356 (@michael-k)
• Fix git lfs untrack so it doesn't remove entries incorrectly from .gitattributes #398 (@michael-k)
• Fix git lfs clean bug with zero length files #346 (@technoweenie)
• Add git lfs fsck #373 (@zeroshirts, @michael-k)
• The Git pre-push warns if Git LFS is not installed #339 (@rubyist)
• Fix Content-Type header sent by the HTTP client #329 (@joerg)
• Improve performance tracing while scanning refs #311 (@michael-k)
• Fix detection of LocalGitDir and LocalWorkingDir #312 #354 #361 (@michael-k)
• Fix inconsistent file mode bits for directories created by Git LFS #364 (@michael-k)
• Optimize shell execs #377, #382, #391 (@bozaro)
• Collect HTTP transfer stats #366, #400 (@rubyist)
• Support GIT_DIR and GIT_WORK_TREE #370 (@michael-k)
• Hide Git application window in Windows #381 (@bozaro)
• Add support for configured URLs containing credentials per RFC1738 #408 (@ewbankkit, @technoweenie)
• Add experimental support for batch API calls #285 (@rubyist)
• Improve linux build instructions for CentOS and Debian. #299 #309 #313 #332 (@jsh, @ssgelm, @andyneff)