use <silent> flag for stage hunk mapping
output errors when stating hunks, even if verbose is not set
updated documentation
new command :ChangesStageCurrentHunk
use variables for staging
try to make hg also work [does not work yet]
link signcolumn to linenr if numbering is enabled
make sure sign highlighting persists when switching color scheme
do not add signs on enter, if the bufname is empty
Merge commit 'd4a36'
Merge commit '074576'
Merge commit '9d9c9f'
Merge commit '19f26c'
Merge commit '0b9d'
Merge commit 'd3a24'
Merge commit 'd667'
Merge commit '96a4ff'