v1.4.0

• This current version only reserves the amount of space for a new block that the caller requested. Previous versions would reserve twice as much space as the caller asked for. It was assumed that this would reduce the likelihood that blocks would need to move around within RAM very often when they would grow. But the resulting potential size of documents in RAM was disappointing. When using the TI-string-buffer library from https://github.com/bkrug/Emu-Writer, changing the library in this way does not appear to hurt performance.
• Fixed a bug in that occurred when the 16-bit word directly following the end of the memory buffer looked like the header for an open block.