Create Changelog (#218)

- Complete history from wiki page
- Matches keepachangelog standards via http://keepachangelog.com/en/1.0.0/

Author: gutierri

CHANGELOG.md

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+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [2.10.0] - 2013-12-06
+### Added
+- Enable term filtering for listcon.
+- Add make install command.
+- Enable use of global config file in `/etc/todo/config`. `make install` installs a global config file.
+- Allow use of `post_filter_command` for `listall` and `listpri`.
+- Print usage help for custom action and all passed actions.
+- Allow configuring null data files (done.txt and report.txt) and don't create
+  them.
+- Color contexts and projects without an add-on, just by setting vars in the
+  config file.
+- Place add-ons in subfolders (for easier git clone).
+
+### Changed
+- Improve code commenting/documentation.
+- Refactor code for speed/better organization.
+- Improve test coverage and test library.
+
+### Removed
+- Removed add date from line completion, ie, `todo.sh ls 10[tab]`.
+
+### Fixed
+- Properly replace date when replacing task with priority and date.
+- Handle `-h`, `shorthelp`, and `help` when a Fatal Error happens.
+- Fix `todo_completion` problem with Bash 3.1.
+
+## [2.9.0] - 2012-04-08
+### Added
+- Added tab auto-completion of projects and contexts from `todo.txt` and `done.txt`. Type `@<Tab>` or `+<Tab>` while entering a task.
+- Added new listaddons command displays installed addons.
+- List priorities within a range using listpri. For example, to see tasks prioritized A-B, use `todo.sh listpri A-B`
+
+### Fixed
+- Fixed various cosmetic issues, bugs, and added developer test library enhancements.
+
+
+## [2.8.0] - 2011-09-13
+### Added
+- `listpri`/`lsp` now filters by term. For example, `todo.sh lsp A book` will only return tasks prioritized `A` with the word book in them.
+- Added support for todo directory paths with spaces in them.
+- Tasks with priority included and auto prepend date on (`-t`) get the date where expected. 
+- Smarter action completion messaging: `do`, `pri`, and `depri` all let you know if a task is already done, prioritized, or deprioritized.
+- Made more parameters available to offer more control to custom actions (`-c`, `-A`, `-N`, `-T`)
+
+### Changed
+- Improved portability for Dropbox or USB key users. If not specified, todo.sh checks for a config file in its own directory; default todo.txt location is todo.sh's directory.
+- Improved script performance thanks to optimized code
+- Exposed `cleaninput()` for use in addons
+- Improved testing framework:
+  - Better escaped input handling
+  - Abstracted make_action function to test custom action behavior
+  - Added tests for source code compliance
+  - Cleaner, simpler, modernized, optimized code
+
+### Fixed
+- Custom action output no longer prefaced by `TODO:` so it's easier to see when the core script vs. addon is performing an action
+- `listpri` complains if specified priority is invalid
+- Don't abort task listing when items contain certain escape sequences (`\c \033`)
+- Condense whitespace ONLY whe task is quoted; automatically convert CRLF to space
+- Don't delete `|` (pipe) from task input
+- `-+` and `-@` no longer break task coloring if context or project appears at the end of the line
+
+
+## [2.7.0] - 2010-08-03
+### Added
+- Added generalization of the _PRI_X_ color support to all priorities
+- Added highlighting of done, but not yet archived tasks via *COLOR_DONE*
+- Color map (BLACK, ...) now supports spaces in the color definitions, making it possible to override the default ANSI escape codes with e.g. Conky tags (`${color black}`)
+
+### Changed
+- Cleanup: help messages, consistent output messages
+- Exporting `die()` function for use in custom commands
+- `prepend` and `replace` actions keep prepended date, `append` considers sentence delimiters
+- Tests: several regression tests added
+
+## [2.6.0] - 2010-05-11
+### Added
+- Added a case for the fixed replace command.
+
+### Changed
+- Changed odd tabs to spaces.
+- Faster help/useage document outputs.
+- Consolidated `TODOTXT_VERBOSE` tests.
+- Refactored various add functionality to one function.
+- Updated `_list()` output to match updated `addto`.
+
+### Fixed
+- Quoting regexp to parse properly.
+- Fixed erroneous hide/show comments.
+- Correctly fixed regexp quoting issue for bash v3.1.x and v3.2.x.
+- Old versions of bash do not have `=~`
+- Fix line endings.
+- Fixed bug for replace command.
+
+## [2.5.0] - 2010-05-05
+### Added
+- Support use of `$HOME/.todo/` for all todo.sh configuration
+- Added new multiple do capability to help message
+- Added option to disable final filter
+- Added a new variable `$TODO_FULL_SH`
+- Added new action `addm`
+- Added support PAGER pipe for help output
+- Added some additional mappings, plus a project context
+
+### Changed
+- Added 'silent' to a bunch of calls
+
+### Fixed
+- Fixing prepend and priority issue.
+- Replace with `priority` set
+- Multiple `do` items
+- `prepend` not correct on prioritized tasks
+- Invalid date range.  Changed regex `[ -~]` to `[ ~-]`.
+- `do`: no safeguard to `do` twice. Tests item is not marked done before attempting to mark item as "done".
+- Fixed `add` does not escape line breaks
+- `append` and `replace` unexpected behavior if there's an `&` in task (even in quotes)
+- Tasks whose `ID` begins with `0` ought to be ignored.
+- Fixed auto-complete function name for contexts
+
+
+## [2.4.0] - 2009-05-11
+### Added
+- Added support for `TODOTXT_FINAL_FILTER` to provide a final custom list filter.
+- Added support for custom sorting (can set in `todo.cfg`)
+- Added parameterize for `.todo.actions.d` directory
+
+### Removed
+- Removed annoying trailing space on `pri` tasks
+- Don't set colors in default `todo.cfg`.
+- Don't set sort command in default `todo.cfg`.
+
+### Fixed
+- `listcon` and `listproj` now work correctly on Mac OS X 10.5
+- `pri` accepted priorities of more than a single letter
+- Support commands combination for `TODOTXT_SORT_COMMAND`; e.g. piped commands can be used: `export TODOTXT_SORT_COMMAND=" env LC_COLLATE=C sort -f -k2 - | grep -m 10  ."`
+- Replace now echoes old item AND new item, like it used to.
+- `depri` no longer wipes out tasks with more than just the priority in parentheses
+- Now throws an error if you try to prioritize with more than one letter, ie, `todo.sh pri AA` doesn't work any more.
+
+## [2.3.0] - 2009-04-02
+### Added
+- Added hide priority, context, and projects options now enabled `-P`, `-@` and `-+`
+- Enabled recursive call of todo.sh from add-ons
+- Exported variables for use in add-ons
+- Added `-vv` option for debugging output
+- Added short usage statement (that fits on one screen) with `-h`
+- Added Makefile dist infrastructure for versioned releases in Downloads area on GitHub
+
+### Changed
+- Separated `_list` function for reuse by various versions of list command to reduce duplicate code
+- Set `ls` as the default action
+
+
+## [2.2.0] - 2009-03-??
+### Fixed
+- For awhile here during the GitHub transition, we stripped the version number from todo.sh and updated it kind of willy-nilly, so we're back-versioning all unversioned copies v 2.2.
+
+
+## [2.1.0] - 2009-02-23
+### Added
+- Added "pluggability" with `~/.todo.actions.d/` support (via [Tammy and Ed](http://tech.groups.yahoo.com/group/todotxt/message/1739))
+- Added `-t` param, off by default. When specified, it automatically prepends the current date to new todo's on add
+- Searches for more Unix-y `~/.todo.cfg` if `~/todo.cfg` doesn't exist (via [Ed](http://tech.groups.yahoo.com/group/todotxt/message/1767))
+
+### Fixed
+- Corrected "ambiguous redirect" bug with done file (via [Jeff](http://tech.groups.yahoo.com/group/todotxt/message/1764))
+- Corrected usage and help message with new params
+- Corrected config file miscomment about colors
+
+
+## [2.0.1] - 2009-02-17
+### Fixed
+- Restored `-d` parameter functionality broken in 2.0 (d'oh, thanks Jason, you made the changelog! )
+
+
+## [2.0.0] - 2009-02-17
+### Added
+- Added `addto [DEST] "Text to add"` will append text to any file in the todo directory, like `ideas.txt` or `maybelater.txt`.
+- Added `mv # [DEST]` will move a task from `todo.txt` to another file `[DEST]` in the todo directory, like if you decide your `"Learn French"` task should go into your `maybelater.txt` file.
+- `depri #` removes priority from a task.
+- `rm # [TERM]` or `del # [TERM]` will delete just the `[TERM]` from the task on line # in todo.txt.
+- `listfile [SRC] [TERM]` or `lf [SRC] [TERM]` will list the contents of any text file in the todo directory, and filter by keyword `[TERM]`.
+- `listcon` (`lsc`) and `listproj` (`lsprj`) lists contexts and projects, respectively, that appear in todo.txt. (Requires `gawk`)
+- On task deletion, line number preservation is on by default (known issue, leaves blank lines). Optional, can be turned off with `-n` option.
+- Auto-archive on task completion is now on by default; can be turned off with `-a` parameter.
+
+### Changed
+- Separated config file into a non hidden dot file.
+
+### Fixed
+- Better error handling throughout for all commands.
+- Archive now defrags the file (removes blank lines; see line preservation option.)
+- Using `/bin/bash` instead of `/bin/sh`
+
+
+## [1.7.3] - 2006-07-29
+### Added
+- Added short action aliases – `add/a`, `list/ls`, `listpri/lsp`, `listall/lsa`, `prepend/prep`, `append/app`, `del/rm`
+
+
+## [1.7.2] - 2006-07-28
+### Added
+- `listpri` automatically capitalizes lowercase priorities
+- `listpri` now displays friendly error message, and the # of tasks returned in verbose mode
+
+### Changed
+- `do` action removes priority from task automatically
+  Update:
+
+### Fixed
+- Actions are now case-insensitive (ie, `todo.sh Add` will work)
+
+
+## [1.7.1] - 2006-07-21
+### Changed
+- I'm a big dummy and didn't keep track of what I fixed here. Sorry!
+
+
+## [1.7.0] - 2006-07-19
+### Added
+- Interactive `add`, `append`, `prepend`, and `replace` (tx, Ben!)
+- Action `listall` displays tasks from both todo.txt and done.txt
+- Option `-f` forces delete action and disables interactive input (for todobot.pl)
+- Option `-h` displays full help message.
+
+### Deprecated
+- Option `-q` deprecated; Use `-v` to turn on verbose mode
+
+### Changed
+- A very short version of usage message displays by default instead of the long version.
+- Comment in info about `.todo` file being required
+
+### Fixed
+- No colors display for done tasks (tx, Tanja!)
+- Sort is now case-insensitive (tx, Lonnie!)
+
+
+## [1.6.3] - 2006-07-06
+### Added
+- Line numbers now padded, up to 100 characters. (tx, Tanja!)
+
+
+## [1.6.2] - 2006-07-05
+### Fixed
+- Windows config files with spaces now work (tx Ron)
+
+
+## [1.6.1] - 2006-07-05
+### Changed
+- The default location of your `.todo` file is now `$HOME/.todo`
+
+### Fixed
+- No colors mode (`-p`) now works as expected
+
+
+## [1.6.0] - 2006-07-04
+### Added
+- Action `prepend` adds text to an item at the beginning of the line.
+- Configuration file is now separated from script into `.todo` file
+- Specify a config file other than `.todo` using the `-d` option
+- Option `-q` quiets todo.sh's chattiness.
+- Option `-V` shows version and license information.
+
+### Changed
+- The option to turn off colors is now `-p` (no longer `-nc` as in 1.5.2)
+
+
+## [1.5.2] - 2006-06-26
+### Fixed
+- Items that start with `x ` (an x with a space after) are archived now to avoid lines that start with a word like `xander` from being archived. (tx, Tannie!)
+- Report now only archives items that start with `x ` as well.
+
+
+## [1.5.1] - 2006-06-26
+### Fixed
+- Items with an `x` in them at all were being deleted on archive with 1.5; all fixed now.
+
+
+## [1.5.0] - 2006-06-24
+### Added
+- Option to turn off colors (to avoid characters in piped text files or IM bot), ie `todo.sh -nc [COMMAND]`
+- A date is added to a completed todo, ie `x 2006-06-24` (tx SETH)
+- Action `remdup` removes exact duplicate lines from todo.txt (tx Tannie)
+- Action `del` removes any blank lines from todo.txt (tx Tannie)
+
+### Changed
+- Using `sed -i` instead of copying tmp file (tx Tannie)
+
+### Fixed
+- Colors show in OS/X 10.4 (tx SETH & misha)
+
+
+## [1.4.0] - 2006-06-17
+### Added
+- Tasks are color-coded by priority in Cygwin (Thanks, Abraham, Manuel and Luis!)
+
+### Changed
+- Switched endless `if-then` to a `case` statement, and tightened up `wc -l` regex. (Thanks, Sash!)
+
+### Fixed
+- If you `replace`/`do`/`append` to a non-existent task, your todo.txt is no longer overwritten and the error is handled gracefully. (Thanks, Scott!)
+
+
+## [1.3.0] - 2006-05-29
+### Added
+- Displays the number of newly added todo (Thanks, Amy!)
+- Confirms whether or not you really want to delete a todo
+- Displays success messages and confirmations on `append`, `replace`, `do`, etc.
+- Added licensing information in comments. GPL, baby!
+
+### Changed
+- Alphabetized command workflow in if/then construction
+- Tightened up `sed` commands, removed unnecessary `grep`s and `cat`s (Thanks, Sash!)
+- Stripped whitespace around number lines from wc results
+
+### Removed
+- Removed filenames from `report.txt` format, for easier graphing or Excel imports.
+
+### Fixed
+- Todos are now sorted alphabetically when listed by a term. (ie: `todo list flowers)
+
+
+## [1.2.0] - 2006-05-15
+### Added
+- `list` is case insenstive. ie, `todo list Mac` will match lines with "mac" and "Mac"
+
+### Changed
+- `todo list` matches multiple [TERM]s. ie, `todo list mac offline` will match all lines that contain the words "mac" and "offline"
+- `repri` and `pri` actions combined into `pri` action (Thanks Mike!)
+- Quotes no longer required with `add` and `replace` (Thanks Karl!)
+- Any priority added to a todo must be uppercase to preserve sort order, enforced now. ie `todo pri 1 a` will return a usage error.
+
+### Fixed
+- File "sanity checks" and cleanup function, test script and various fantastic stylistic improvements added. Extra big thanks to Karl!
+
+
+## [1.1.0] - 2006-05-12
+### Added
+- Supports file paths with spaces (ie `C:\Documents and Settings\gina\todo.txt`)
+
+
+## 1.0.0 - 2006-05-11
+### Added
+- Consolidated into one master script with usage notes and released.
+
+
+[Unreleased]: https://github.com/todotxt/todo.txt-cli/compare/v2.10.0...HEAD
+[2.10.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.9.0...v2.10.0
+[2.9.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.8.0...v2.9.0
+[2.8.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.7.0...v2.8.0
+[2.7.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.6.0...v2.7.0
+[2.6.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.5.0...v2.6.0
+[2.5.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.4.0...v2.5.0
+[2.4.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.3.0...v2.4.0
+[2.3.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.2.0...v2.3.0
+[2.2.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.1.0...v2.2.0
+[2.1.0]: https://github.com/todotxt/todo.txt-cli/compare/v2.0.1...v2.1.0
+[2.0.1]: https://github.com/todotxt/todo.txt-cli/compare/v2.0.0...v2.0.1
+[2.0.0]: https://github.com/todotxt/todo.txt-cli/compare/v1.7.3...v2.0.0
+[1.7.3]: https://github.com/todotxt/todo.txt-cli/compare/v1.7.2...v1.7.3
+[1.7.2]: https://github.com/todotxt/todo.txt-cli/compare/v1.7.1...v1.7.2
+[1.7.1]: https://github.com/todotxt/todo.txt-cli/compare/v1.7.0...v1.7.1
+[1.7.0]: https://github.com/todotxt/todo.txt-cli/compare/v1.6.3...v1.7.0
+[1.6.3]: https://github.com/todotxt/todo.txt-cli/compare/v1.6.2...v1.6.3
+[1.6.2]: https://github.com/todotxt/todo.txt-cli/compare/v1.6.1...v1.6.2
+[1.6.1]: https://github.com/todotxt/todo.txt-cli/compare/v1.6.0...v1.6.1
+[1.6.0]: https://github.com/todotxt/todo.txt-cli/compare/v1.5.2...v1.6.0
+[1.5.2]: https://github.com/todotxt/todo.txt-cli/compare/v1.5.1...v1.5.2
+[1.5.1]: https://github.com/todotxt/todo.txt-cli/compare/v1.5.0...v1.5.1
+[1.5.0]: https://github.com/todotxt/todo.txt-cli/compare/v1.4.0...v1.5.0
+[1.4.0]: https://github.com/todotxt/todo.txt-cli/compare/v1.3.0...v1.4.0
+[1.3.0]: https://github.com/todotxt/todo.txt-cli/compare/v1.2.0...v1.3.0
+[1.2.0]: https://github.com/todotxt/todo.txt-cli/compare/v1.1.0...v1.2.0
+[1.1.0]: https://github.com/todotxt/todo.txt-cli/compare/v1.0.0...v1.1.0