new function cmd_conda to define the
PATH environment variables with conda environment.
new function appmamba to install software and manage
Environment with micromamba.
new function cmd_on_fail to define the expression to
be evaluated when the command failed.
new function cmd_on_succeedto define the expression
to be evaluated when the command succeeded.
new function cmd_on_start() to define the
expressions which will be run when command started
new function cmd_on_exit() to define the expressions
which will be run when command finished
new command samtools
new function cmd_parallel() to run multiple commands
meanwhile
use processx package to execute the command and
remove the sys and withr package from
dependencies