addapting sources to subtrees
updating readme
Squashed 'src/remixlab/tersehandling/' content from commit 9247d45

git-subtree-dir: src/remixlab/tersehandling
git-subtree-split: 9247d4559a07dd725d95999db12df9315f8c6e7b
Merge commit 'f52281065d9bb6cea92f39ee21004102b1fcf11a' as 'src/remixlab/tersehandling'
Squashed 'src/remixlab/util/' content from commit 30583e7

git-subtree-dir: src/remixlab/util
git-subtree-split: 30583e7c63e6d68b3e8bd781ec86c44ce168c18c
Merge commit '04339712add1e8ff2925a1506093934740f18beb' as 'src/remixlab/util'