TECO-64 version 200.18.0

Completed changes to allow selection of either 32-bit or 64-bit variables and buffer sizes at build time (default is 32-bit).
Renamed and moved template files to separate sub-directory, etc/templates.
Allowed use of -1EC to use maximum size for edit buffer (actual value depends on build parameters).
Removed use of math library, and required use of ncurses library only if including display mode support during build.
Improved use of virtual columns when executing arrow keys in display mode.
Cleaned up lint and compiler warnings occurring with some combinations of build parameters.

TECO-64 version 200.17.0

Cleaned and corrected documentation, especially obsolete files and links.
Ensured that expression stack is always reset after all flow control commands and at end of command strings.

TECO-64 version 200.16.2

Revised and updated documentation.
Renamed macros for readability.
Changed default for :U to be 0 instead of -1.
Add macros to replace magic numbers.
Made minor changes to experimental CTRL/F command.

TECO-64 version 200.16.1

Fixed bug with use of at-sign modifier in EI command caused by code change in November 2020.
Removed feature of FM and FQ commands that would avoid display refresh if colon modifier used.
Added :U command to use default value of -1 if no value supplied (and E1&256 flag bit set).

TECO-64 version 200.16.0

Added colon modifier to FM and FQ commands to allow error detection.
Added mapall.tec library macro to map all possible special key codes.
Added F10, Shift-F10, and F11 to keycode definitions.
Fixed several bugs with status line in display mode.
If using virtual memory paging, remove limit on edit buffer size, and read in entire input files.
Suppress display of memory expansion if in display mode.
Cleaned up initialization and shutdown code.

TECO-64 version 200.15.4

Fixed bugs with use of display mode, including resizing windows. Note that although this appears to fix all known issues, further work may be required on this code.

TECO-64 version 200.15.3

Fixed bug caused by recent change to exit logic.

TECO-64 200.15.2

Added Future Plans to documentation.

TECO-64 version 200.15.1

Changes mostly involved improvements to the status line in display mode.

TECO-64 version 200.15.0

Added experimental FF and CTRL/F commands, to allow mapping of some key combinations to command strings when display mode is either not included, or is not currently active.