0.25.0

Features and enhancements

• [c++] Make the runtime code compatible with ESP8266 MCUs. (#1456, #1460)
• [ide] Employ arduino-cli for hardware packages installing, compiling, and
  uploading. It makes possible to use the same variety of target boards which
  Arduino IDE supports. In other words, you can install third-party hardware
  packages to be used by XOD. In particular, ESP8266-based boards like WEMOS
  and NodeMCU board index is included out of the box. (#1459, #1465, #1469)
• [ide] Rather than silently starting to download a potentially big hardware
  package on the first upload, an explicit offer to download and install is
  shown. The download process is visualized with the progress bar. (#1459)
• [ide] Add a new item to the Deploy menu to upgrade already installed
  toolchains to their latest versions. As a consequence, after the upgrade, XOD
  is capable of uploading to Arduino Nano with the new bootloader, manufactured
  after Jan 2018. (#1467)
• [ide] Show all compilation/upload options for a given board, not only MCU.
  In particular, it allows compiling and uploading to ESP8266-based boards.
  (#1462)

New nodes

• xod-dev/esp8266-mcu — a new
  library for accessing the internet using the onboard Wi-Fi of an
  ESP8266-based board when it is used as a target. (#1456, #1463, #1466)

Bug fixes

• [ide] The switch to arduino-cli allowed to abandon toolchain repackaging.
  Now they are downloaded from the original vendor locations. It should remove
  all errors related to SSL, TLS, and Kaspersky antivirus while uploading to a
  new board for the first time.
• [ide] Fix IDE crashing when trying to change the arity level of a node having
  variadic pins labeled as plain numbers, like 1, 2, 3. (#1470)
• [nodes] Fixed DHT11 and DHT2x reading on some sensor/board combinations.
  (#1464)

0.24.1

Bug fixes

• [ide] Fixed a bug that caused bundled Arduino libraries to be unreachable by build tools. (#1449)

0.24.0

Features and enhancements

• [core] Implemented the #pragma XOD require directive. Now a XOD library
  author can declare a dependency on a regular Arduino C++ library hosted on
  GitHub. It will be automatically downloaded and installed for library users.
  (#1425, #1426)
• [core] Optimize one of the transpilation stages: topological graph sorting.
  For complex projects, it brings 10 to 100× faster transpilation. (#1430)
• [ide] A patch can now be scrolled with mouse scroll or the scroll gesture on
  a laptop touchpad. (#1412)
• [nodes] xod/uart/uart-* constructor nodes now initialize the interface on
  their own. No need to use the begin node separately. (#1442)
• [chore] Upgrade to NodeJS v10 and the latest Electron Builder. It gives
  slightly better performance and will bring much faster and traffic-saving IDE
  updates starting from the release following the current. (#1429, #1435)

New nodes

• xod/core/pad-with-zeroes —
  add leading zeroes to numbers. (#1436)
• xod/datetime — a new standard library
  to deal with timestamps, dates, and time. (#1436)
• xod-dev/ds-rtc — a rewrite of now
  obsolete ds1307-* nodes from common-hardware. More consistent and using
  the new datetime structure. (#1438)
• xod-dev/pn532-nfc — a new library
  to scan, read, and write RFID/NFC tags. (#1424)

Deprecations and removals

• xod/common-hardware/ds1307-rtc-* are deprecated in favor of the new
  xod-dev/ds-rtc library.
• xod/uart/begin is deprecated now because the base uart-* nodes now
  initialize the interface on their own.

Bug fixes

• [ide] Deprecated and utility nodes started to appear in quick search results
  due to a regression in 0.23.0. That’s fixed. (#1418)
• [ide] Revert horizontal space amount for node labels which caused shortening
  of terminal and bus labels longer than 2-3 characters in 0.23.0. (#1420)

0.23.0

Features and enhancements

• [core] The buses concept is introduced. (#1392, #1397)
• [ide] Dramatic optimizations while working with patches and debugging: moving
  nodes, binding values, creating links, searching for nodes, watching values,
  etc. (#1396, #1400, #1402, #1404)
• [ide] Show constant nodes’ values as their labels unless overriden rather
  than static constant-number, constant-string, etc. (#1366)
• [ide] Do not auto-stop a debug session on patch changes, show a note about
  the change instead. (#1374)
• [ide] Split deployment pane output into several tabs dedicated to Compiler,
  Uploader, and Debugger. (#1409)
• [ide] Make constant and watch nodes resizable like comments. (#1375)
• [core] Comment out XOD pragmas in C++ code so that GCC produces no
  compilation warnings. (#1360)

Bug fixes

• [core] Detect and report pin name clashes. (#1356)
• [ide] Make possible re-opening the same project. (#1407)
• [nodes] Fix the uart node for Uno-like boards which previously produced
  a compilation error about undefined SERIAL_PORT_HARDWARE_OPEN. (#1382)

0.22.0

Features and enhancements

• [ide] Most of the error messages appearing on the snackbar made persistent,
  that is they don’t hide automatically. (#1284)
• [ide] Don’t try to auto-fix ambiguous byte literals like 15abc or 7C in
  the inspector. (#1313)
• [core] Now a character surrounded by single quotes ('G') is a valid byte
  literal which denotes a corresponding value from the ASCII table. (#1317)
• [core] Make some error messages more clear and consistent (#1330).
• [ide] Add View menu items to toggle the project browser and inspector (#1340).
• [ide] Allow links between inputs and outputs of the same node. It will
  transpile successfully if the node contains a defer on the loop path inside
  it. (#1349).

New nodes

• xod/core/length(string)
• xod/common-hardware/lps331-barometer

Libraries for dealing with the internet connection and UART interface:

• xod/uart
• xod/stream
• xod/net
• xod-dev/esp8266
• xod-dev/w5500

Bug fixes

• [core] Properly transpile programs with patch specializations containing
  abstract nodes. They were not resolved recursively. (#1343)
• [core] Adjust code generation so that it produces no warnings other than
  unknown #pragma’s. It also fixes compiler errors for the string
  concatenation when compiling for Arduino Due. (#1347)
• [ide] When saving a project with File → Save Copy As don’t mark the original
  ongoing project as saved. (#1282)
• [ide] Do not show a hard to escape suggestion to switch the workspace when a
  damaged project failed to load. (#1290)
• [ide] View → Pan to Origin used to break IDE when hit on an empty patch.
  Fixed. (#1314)
• [ide] Inspector now always show a disabled input with a “custom type”
  placeholder for custom type pins. (#1331)
• [nodes] Fix xod/math/log-bx broken
  during the recent xod/math extraction. (#1320)
• [ide] Tweak library sorting in the project browser so that x/foo comes
  before x/foo-bar. (#1332)
• [ide] Creating a patch with a very long name no longer cause project browser
  controls elements to shift out of its view area. (#1338)
• [ide] Get rid of white stripes appearing near sidebars on some computers,
  notably, on Linux and when zooming in. (#1339, #1344)

0.21.2

Bug fixes

• [core] Fix transpilation error caused by values bound to collapsed variadic node. (#1306)
• [nodes] Fix implementation of xod/math/clip. (#1307)
• [core] Fix a very rare case where constant values could be overwritten. (#1308)

0.21.1

Bug fixes

• [c++] Fix isSettingUp function that returned opposite value. (#1297)
• [tutorial] Update tutorial to use proper PORT literals, mention new pins and nodes. (#1296)

0.21.0

Features and enhancements

• [core] Add a custom type system which allows defining own complex types.
  (#1216, #1224)
• [core] Add a new built-in type: Port. Port specifies a board hardware pin
  like A4 or D4. Port specification became more straightforward rather than
  plain numbers used before. (#1232)
• [core] Add a new built-in type: Byte. A byte is a group of eight bits
  specified in a binary, decimal, or hexadecimal form. (#1192)
• [core] Clarify error messages related to generic type conflicts. (#1246)
• [nodes] Add byte-to-number and number-to-byte conversion nodes to
  xod/bits. (#1186)
• [nodes] Make nodes in xod/bits use the new Byte type. (#1261)
• [nodes] Make nodes in xod/common-hardware use the new Byte and Port types.
  They now also expose unified pins for an explicit update, update
  acknowledgment, and error signaling. (#1274)
• [nodes] Nodes related to mathematics moved from xod/core to
  xod/math (#1251)
• [nodes] Nodes related to general purpose input/output moved from xod/core
  to xod/gpio (#1256)
• [nodes] Nodes for the I²C bus communication moved from xod/core to
  xod/i2c (#1270)
• [tutorial] Links in the welcome-to-xod tutorial no longer use goo.gl link
  shortener and point to web-pages directly (#1217)

Deprecations and removals

• All nodes related to mathematics in xod/core are deprecated now. Use
  corresponding nodes from xod/math instead.
• Nodes analog-input, pwm-output, digital-input, and digital-output
  from xod/core are deprecated now. Use analog-read, pwm-write,
  digital-read, digital-write from the new xod/gpio, or
  xod/common-hardware/analog-sensor instead.
• Plain numbers for pins defining a port are deprecated now. Although value 3
  is still valid, prefer explicit A3 or D3. IDE will auto-correct wrong
  values on input commit.
• Plain numbers for pins storing a byte are deprecated now. Although value 3
  is still valid, prefer explicit 3d, 03h, or 11b. IDE will auto-correct
  wrong values on input commit.

Bug fixes

• [core] Correctly pick up values bound to generic terminals and use them as
  default values for pins created by these terminals. (#1250)
• [ide] Fix some cases when generic pins were not colored even if their types
  can be deduced. (#1248)
• [ide] Reset project preferences when creating a new project. (#1252)
• [ide] Make toolchain installation immune to download interruptions. (#1255)

0.20.3

Bug fixes

• [build] Fix macOS distro download filename. Now it has proper .dmg
  extension. (#1198)
• [core] Fix opening projects saved prior to 0.20.0 with some pins explicitly
  bound to Never. Notably, the bug led to a transpilation error when using
  digital-output from own xod/core fork. (#1207)
• [core] Fix untitled outputs name assignment for C++. Previously, all
  untitled outputs got name output_OUT. Now they are output_OUT1,
  output_OUT2, and so on. (#1204)
• [core] Fix C++ generation from generic nodes containing
  not-implemented-in-xod which previously was silently failing. (#1225)
• [ide] Minimize performance regression in 0.20.x caused by generics resolution
  (#1213, #1214)
• [ide] Fix occasional [Object object] errors when deploying. Now they are
  still there but formatted properly. (#1203)
• [ide] Format transpilation errors that previously appeared as cryptic
  objects. (#1230)
• [ide] Fix uncaught error handling. Now they pop up as a regular error for
  easier reporting. (#1230)
• [ide] Fix canceling when opening a project. Previously it broke the current
  project (#1202)

0.20.2

Bug fixes

• [core] Fix crash on creating a variadic patch with non-matching pin types. (#1194)
• [core] Recognize legacy defer nodes(xod/core/defer-*) and don't complain about a graph cycle when they are used. (#1195)