Auxly

=== Highlights
- Renamed function.

=== Changed
- Renamed `stringy.subidx()` to `stringy.subat()`.

=== Highlights
- Added helper functions/methods.

=== Added
- Added `encoding` option to `filesys.File` methods.
- Added `stringy` module.
- Added `callstop()`.
- Added `trycatch()`.
- Added `filesys.File.size()`.

=== Highlights
- Minor method addition.

=== Added
- Added `filesys.File.readlines()`.

=== Highlights
- Minor function tweak.

=== Changed
- The default root for `filesys.abspath()` is now the CWD.

=== Highlights
- Minor function addition.

=== Added
- Added `verbose()` helper function.

=== Highlights
- Minor function addition.

=== Added
- Added `filesys.checksum()` function and associated `filesys.File` methods.