Gnucash for Mac

The following fixes and improvements were not associated with bug reports:

• [reports]Lazily generate sub-reports. Reports with links to detail sub-reports like the budget reports would take a long time to generate because they built both the main report and all of the sub-reports. Now the sub-reports generate when the user clicks the link in the main report.
• Security editor quote sources: Add new source, China Merchants Bank. Remove no longer supported F::Q Modules Bloomberg.pm, DWSFunds, Investor's Exchange (U.S.), Morningstar Australia, Skanddinaviska Enskilda Banken, Tiaacref.pm, Troweprice.pm and many of the multi-source sources from the Security Editor.
• [import-main-matcher.cpp] Add tooltips to transaction A, U+C, and C action columns in the generic transaction import matcher.
• [reports] Use ICU for Unicode string comparison and substring search because it knows how to correctly localize comparisons of accented and unaccented characters.
• [reports] more robust error handling if target report doesn't exist.
• Register: Ensure splits belong to transaction when doing bulk operations on a transaction's splits.
• Drop the definition of __EXTENSIONS__ from three files and instead move it to compiler options if on a platform that needs it.
• Avoid non-POSIX "echo -n" behavior in util/gnc-vcs-info.
• Add testbuild target which builds tests without running them to accommodate packaging processes that run ctest separately.
• [engine.i] convert gnc_account_accumulate_at_dates to c++.
• [gnc-engine-guile.cpp] helper gnc_split_to_scm function.
• [gnc-engine-guile] reduce overhead of gnc_foo_to_scm by caching the result of SWIG_TypeQuery(typestr)
• [balance-forecast] optimise some loops: fewer temporary lists and gc
• Let cmake probe for the existence of HAVE_STRUCT_TM_GMTOFF, fix build of test-gnc-date on systems without HAVE_STRUCT_TM_GMTOFF, and avoid unused variable warnings on systems without HAVE_STRUCT_TM_GMTOFF
• Wrap include of gtest.h and gmock.h with a warning-silencing pragma. See https://github.com/google/googletest/issues/4701 The warnings cause the Arch Linux CI to fail because of -Werror.
• Fixed GetInvoiceFromTxn to convert to the right type of Python object for a GncInvoice.
• [test-report-utilities] more tests for gnc:account-accumulate-at-dates testing balances at date boundaries

Full list of changes available here