fix missing error handling when terminating the string

add cxJsonToString() and cxJsonToPrettyString() - resolves #778

adds new CX_BUFFER_DO_NOT_FREE buffer flag

removes buffer flush and adds maximum capacity instead - resolves #185

add test for multiple consecutive line continuations

adjusts documentation regarding line continuation support - relates to #457

add CHANGELOG entry for the bug found by test issue #777

fix cxJsonFromString() ignoring unexpected trailing data + fix wrong handling of trailing whitespaces in general

(0) -1000 -300 -100 -30 -10 -8 +8 +10 tip

mercurial