• Breaking change (TypeScript only) The *.d.ts files now contain TypeScript 3.8 features, #private, which is not usable in older versions
• Add isBigInt(value) to allow BigInt checks. Also add support in bnToBn as well as number conversion utils
• Add isChildClass(Parent, Child?) to check if a class extends the parent, asserting Child is Parent
• (internal) Use #<varname> instead of private _<varname> for private class variables