BREAKING CHANGE: If `beancount-electric-currency` is non-nil, the
currency is appended to transactions, falling back to the ledger's
"operating_currency" option, even in cases where a currency was not
explicitly needed (e.g. only one currency specified for an account).
After receiving input from beancount-mode's author, I reconsidered its
utility and decided to remove it.
Ref beancount/beancount-mode#19
+ Adds electric alignment of amounts on RET
+ Fixes all of beancount's config (which was running because the package
is called beancount, not beancount-mode)
+ Fixes flood of "invalid face org-level-N" warnings
+ Fixes beancount-electric-currency for appending currency to unlabelled
amounts. Also enables this to fall back to first operating_currency in
document, in available
+ Binds TAB to beancount-outline-cycle on outline heading, otherwise
indent-according-to-mode. No need for completion popup when company
already provides this.