Merge pull request #178 from lclc/depsChai

Moved chai4 & 5 to /deps/
Remove .gitattributes.
Merge pull request #181 from randy-waterhouse/develop

Remove .gitattributes.
Move irrxml to /deps/
Merge pull request #179 from lclc/depsIrrxml

irrxml to /deps/
Move bigint to /deps/