requirements: update xkits-lib dependency to version 0.4

bump version to 0.1

prevent potential global name pollution and improve memory trace handling

test/bare: rewrite memory information retrieval and display

pmemory: add interval option for memory usage refresh rate

introduce DeltaMemoryInfo class for memory delta calculation

pmemory: add PID argument to specify process

implement process memory usage tracking and delta calculation

pmemory: improve memory information display and remove unused attributes

setup: update project URLs and add entry point

add pmemory command to display memory usage

add memory allocation tracing functionality

test: add bare.py script for memory usage demonstration

first version

Initial commit