Rp2

* add DONATE and GIFT-typed InTransactions
* changed Legend sheet to include time filter information
* updated documentation to reflect changes in this version

* added hyperlinks to rp2_full_report output:
* taxable events and acquired lots in tax sheet are now hyperlinked to their definition line in the in-out sheet. In LibreOffice, CTRL-click on them to jump to the target (on Mac Command-click)
* summary lines in the Summary sheet are now hyperlinked to the first line of the given year in the tax sheet
* modified time filter CLI options (-f and -t) to accept a full date (YYYY-MM-DD): so it's now possible to filter transactions before and after a given day
* major refactoring: renamed "from lot" and "in lot" to "acquired lot" throughout identifiers, strings, templates, documentation, etc.
* updated documentation to reflect changes in this version

* added profiler instrumentation
* added large input test and refactored ODS output test
* removed rmtree("output") from test_ods_output_diff.py: it modifies the file system, which can cause problems when running tests in parallel (currently not enabled, but that may change in the future).
* minor fixes

* fixed a bug in timestamp check: in and out lots were not allowed to have the same timestamp, but in certain scenarios it could happen (e.g. high-frequency trading)
* fixed a subtle corner-case bug in LIFO, which caused the first gain/loss pair to be incorrect: the minimal input that reproduced the bug is now captured in one of the tests (test_data2.ods, sheet B1). This ensures there will not be a regression.
* disable a link check in user faq: the link was failing the check (incorrectly) on Github actions

* added new LIFO tests
* minor fixes

* added accounting-method programmable plugin infrastructure: by subclassing AbstractAccountingMethod it's now possible to add support for a new accounting method (previously only FIFO was hard-coded in)
* added accounting-method plugins: FIFO, LIFO
* added accounting-method-specific tests, plus additional tests of internal classes (both new and old)
* Added Legend sheet to tax_report_us output
* updated documentation to reflect changes in this version
* minor fixes