Fix colour construction issue
This also has a test to mitigate it in the future
Remove `colormode` option
The original issue it was trying to solve is no longer present with
tcell (it being a holdover from `color256` on termbox) so it is not
needed.
retire gitter channel in favor of irc/matrix
Export options as environment variables (#448)
* Export options as environment variables
Any options from gOpts are available via lf_OPTION environment
variables. For now it works only on booleans, integers and strings (no
array support)
* Do not export some of the options
* Add support for arrays and fix numbers
* Fix comments
* Replace 1 and 0 with true and false
* Export hidden,reverse,dirfirst and sortby options
* Fix comments
* Little fix
* Simplify boolean conversion
log readlink errors instead of fail
Related #447 and #374
