fix regression: missing arg in roslocate
code style
wrap broken pipe error
release vs. dev is now invalid, remove warning
Merge pull request #49 from tkruse/fix_export

Fix export function #47 and #48
sort elements
Do not use realpath in normabspath, fixes vcstools/wstool#5
Adds more text to error message when treating symlink
Removes the symlink when replacing
print date in generated header
more robust key checking
prettier prompt
new inplace option at prompt (replaces backup for symlinks)
better exception
added inplace arg to mock