R: Add Logging to Functions

# Add Logging to Functions

## Documentation for package ‘chronicler’ version 0.3.0

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Package NEWS
- Package README

## Help Pages

%>=% | Pipe a chronicle object to a decorated function.
as.data.frame.chronicle | Coerce a chronicle object to a data.frame
as_chronicle | Coerce an object to a chronicle object.
avia | avia Air passenger transport between the main airports of Luxembourg and their main partner airports
bind_record | Evaluate a decorated function; used to chain multiple decorated functions.
check_diff | Check the output of the diff column
check_g | Check the output of the .g function
flatten_record | Flatten nested chronicle objects
fmap_record | Evaluate a non-chronicle function on a chronicle object.
is_chronicle | Checks whether an object is of class "chronicle"
print.chronicle | Print method for chronicle objects.
purely | Capture all errors, warnings and messages.
read_log | Read and display the log of a chronicle
record | Decorates a function to output objects of type 'chronicle'.
record_ggplot | Record a ggplot expression
record_many | Decorate a list of functions
unveil | Retrieve an element from a chronicle object.
write_chronicle_df | Write a chronicler Data Frame object to a file
zap_log | Zap the log of a chronicle object