Fix _lp_battery return value when LP_ENABLE_BATT != 1
Optimize _lp_color_map using arithmetic comparisons
_lp_color_map: use dichotomy to more evenly distribute cost
_lp_color_map: rename 'load' to 'value'
Optimize _lp_load_color
git: litle optimisation (do not concat $end everywhere)
git: optimize changed lines extraction

- use "git diff --shortstat" to replace 3 different calls to "git diff"
- drop usage of awk
removing useless space
README: fix typos
_lp_git_branch: optimize code paths
Fix redundant (and slow): echo $(_lp_escape ...)

_lp_escape is: print "%q" "$*"
So echo $(_lp_escape ...) is a slow synonym for _lp_escape

Not all the usage cases are fixed in this commit. The remaining ones are
fixed in other patches with more global optimizations.
Optimize _lp_are_vcs_disabled (renamed to _are_vcs_enabled)

Use return code for the boolean return value instead of inefficient
usage of string values.
Display modifications in fossil repository as for git (by line and not by file)
Fix doc regarding the last change in fossil repository management
fixes #185
_lp_temp_sensors will now return the hottest temp

* the average may hide temp that are significantly higher than the other temps
* _lp_temp_sensors will also now use more values to calculate system temperature
Merge pull request #177 from dolmen/optimize/load_color

Optimize loadavg display
Merge pull request #180 from dolmen/fix/doc

README: fix typos
Merge pull request #181 from dolmen/optimize/_lp_are_vcs_disabled

Optimize _lp_are_vcs_disabled
Merge pull request #182 from dolmen/fix/lp_escape-usage

Fix redundant (and slow): echo $(_lp_escape ...)