The regex account aliases added in 0.24 trip up people switching between
hledger and Ledger. (Also they are currently slow).
This change makes the old non-regex aliases the default; they are
unsurprising, useful, and pretty close in functionality to Ledger's.
The new regex aliases are also available; they must be enclosed in
forward slashes. Ledger effectively ignores these, which is ok.
Also clarify docs, refactor, and use the same parser for alias
directives and alias options
alias match patterns (the part left of the =) are now case-insensitive
regular expressions matching anywhere in the account name. The
replacement string (the part right of the =) can replace multiple
matches within the account name. The replacement string does not yet
support any of the usual syntax like backreferences.
