fix: reg(3824169) move to x=1 after inserting char at maxx

bump version

fix: syntax highlighting, cleanup: use namespace std by default

There was a regression from b90c309

fix: when inserting before tab do not scroll, memory errors on resizing

new: only enable syntax highlighting when file is C/C++

++perf in reading: 2x improvement

fix regression by previous optimization, add switch file

it rarely had problems with multithreading, the added functionality enables to switch the opened file without closing the app

fix: \n on EOL, fgets + apnd_s without size, units | optimize: grow_gap

hrsize was in *iB (KiB, MiB...) base 2, and not *B (kB, MB, GB...) base 10
+ rename length->len , capacity->cpt

Bump version

Delete print-utils.cpp