gg is back to goto top
ge goto end, last character of buffer
move context implementation to context.cc
rename assert to kak_assert to avoid collisions
sort includes directives
add a 'debug' command, which write to the debug buffer
InputHandler: auto leave insert mode when editor changed
Use the buffer manager to delete buffer, throw when a client is inserting
Add gt, gb and gc to goto the first/last/middle displayed line