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NEWS.8.md: Fix typo, formatting NEWS.8.md: Fix typo (Matlab --> Octave in one location), move GUI change to GUI section, bold text for user action.
author Arun Giridhar <arungiridhar@gmail.com>
date Tue, 22 Nov 2022 16:43:53 -0500
parents 6544a361e5ca
children ed37c2b974ae
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1 Summary of important user-visible changes for version 8 (yyyy-mm-dd):
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2 ---------------------------------------------------------------------
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3
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4 ### General improvements
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5
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6 - Octave's libraries are now built using symbol visibility by default.
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7 That means that fewer symbols are exported from these libraries.
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8 Configure with `--disable-lib-visibility-flags` to export all symbols
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9 (as in previous versions).
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10
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11 - `filter` is now 5X faster, which also speeds up `deconv`, `fftfilt`
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12 and `arma_rnd` by the same amount.
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13
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14 - `integral` can now output a second argument passing the error
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15 measurement used by the underlying integrator.
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16
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17 - `perms` now accepts a second argument "unique" to return only unique
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18 permutations for inputs with repeated elements. It is faster and
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19 takes less memory to call `perms ('aaaabbbbcccc', "unique")` than to
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20 call `unique (perms ('aaaabbbbcccc'), "rows")`.
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22 - `quadgk` can now accept the `ArrayValued` input parameter to handle
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23 array-valued input functions.
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24
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25 - `delaunayn` now has consistent trivial simplex checking and removal
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26 for all input dimensions, simplex checking 3D inputs is now
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27 vectorized, and >3D simplex checking performance has been improved.
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28 Simplexes points are now ordered so they will all have positive
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29 outward normal vectors. Input type checking has also been added for
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30 improved error handling.
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31
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32 - `factor` now factorizes all 64-bit integers in roughly the same time.
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33 Previously, the product of two large primes took much longer to factorize
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34 than highly composite inputs.
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35
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36 - `Refine` option is now implemented in functions `ode45`, `ode23`,
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37 and `ode23s`.
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38
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39 - Octave is now compatible with PCRE2 (UTF-8). PCRE2 is preferred over PCRE
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40 if both are installed. Configure with `--without-pcre2` if you prefer Octave
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41 to use PCRE in this case.
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42
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43 ### Graphical User Interface
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44
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45 - The GUI has a dark style and several new icons in toolbars for better
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46 visibility and higher contrast. The GUI also has a new terminal widget,
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47 and comes with more fonts for the documentation browser.
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48
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49 ### Graphics backend
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50
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51 - When printing, the option `-svgconvert` is now the default. If you want to
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52 use the more limited EPS-based tool chain (the former default)&mdash;e.g., if
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53 you encounter inaccurate image rendering&mdash;you can pass the `-nosvgconvert`
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54 option to the `print` function.
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55
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56 - Additional properties have been added to the `figure` graphics object:
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57 * `"innerposition"` (equivalent to `"position"`)
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58 * `"windowstate"` (not yet implemented)
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59
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60 - Legend now features a new property `"itemhitfcn"`, allowing the
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61 execution of a callback function when a legend item is clicked.
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62
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63 ### Matlab compatibility
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64
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65 - `inline` functions now support all Matlab methods. The performance
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66 of `inline` functions has also been improved.
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67
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68 - `sub2ind` now supports index values outside of the size specified by
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69 the subscripts.
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71 - `cylinder` now accepts a scalar for the radius argument.
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72
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73 - `clock` now has an optional second output `ISDST` which indicates if
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74 Daylight Savings Time is in effect for the system's time zone.
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76 - `print` now accepts option `-image` to specify the "opengl" renderer
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77 and `-vector` to specify the "painters" renderer.
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79 - `format` now accepts the option "default", which is equivalent to
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80 calling `format` without any options to reset the default state.
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82 - `quadgk` now stops iterating when `error <= tolerance` while the previous
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83 condition was `error < tolerance`.
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84
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85 - `mean` now accepts vector dimensions and options to handle `NaN` values.
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86 The option `"a"` (arithmetic mean), `"g"` (geometric mean), and `"h"`
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87 (harmonic mean) are no longer accepted, only the arithmetic mean is computed.
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88 For the geometric and harmonic mean, please use respective functions
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89 `geomean` and `harmmean` from the Octave Statistics package.
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91 - `var` and `std` now optionally output a second argument containing the mean
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92 or weighted mean.
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94 - `integral` can now accept the 'ArrayValued' option in combination with
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95 'RelTol' and 'WayPoints'.
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97 - File system operations that remove files (e.g., `unlink` or `rmdir`) now also
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98 remove files that have their read-only file attribute set on Windows.
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100 - The default state for certain graphics properties has been made
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101 consistent with Matlab.
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102
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103 Object | Property | Default State
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104 ------------|------------------|------------
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105 figure | "dockcontrols" | "on"
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107 - `ode45`, `ode23`, and `ode23s` have improved results for options `Events`,
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108 `OutputFcn`, and `Refine`, along with corrected orientation of struct
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109 outputs.
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111 - *Early notice of future breaking changes*: Due to many user requests that
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112 Octave should have a Matlab-compatible string class, there is work under way
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113 to implement a string class, which will differ from a vector of characters.
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114 Currently in Octave, both 'foo' and "foo" are largely interchangeable,
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115 barring certain escape sequence interpretations that are present for one but
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116 not another. In future, that is likely to change as a consequence of
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117 implementing Matlab-style strings. This is required for other
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118 Matlab-compatibility activities as well.
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119
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120 *What this means for user code*: If you want to treat "foo" as a character
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121 vector as opposed to a string object, *and* if you intend to use a future
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122 version of Octave with string classes, then rewrite "foo" as 'foo'. If you
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123 need to retain the character vector behavior for "foo", you can continue to
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124 use Octave 8 with long-term support.
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125
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126
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127 ### Alphabetical list of new functions added in Octave 8
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128
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129 * `clearAllMemoizedCaches`
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130 * `matlab.lang.MemoizedFunction`
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131 * `memoize`
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132 * `normalize`
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133 * `pagectranspose`
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134 * `pagetranspose`
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135 * `uifigure`
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136
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137 ### Deprecated functions, properties, and operators
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138
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139 The following functions and properties have been deprecated in Octave 8
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140 and will be removed from Octave 10 (or whatever version is the second
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141 major release after 8):
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142
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143 - Functions
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144
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145 Function | Replacement
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146 -----------------------|------------------
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147 shift | circshift
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148 sparse_auto_mutate | none (see below)
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149
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150 - The `sparse_auto_mutate` function no longer has any effect on Octave's
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151 behavior. Previously, after calling `sparse_auto_mutate (true)`,
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152 Octave would automatically convert sparse matrices to full when a
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153 sparse matrix required more memory than simply using full matrix
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154 storage. This setting was `false` by default for compatibility with
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155 Matlab. Now you must manually convert to full storage when desired.
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156
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157 - Properties
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158
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159 The following property names are discouraged, but there is no fixed
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160 date for their removal.
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161
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162 Object | Property | Replacement
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163 -----------------|-------------|------------
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164 uimenu | label | text
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165 uimenu | callback | menuselectedfcn
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166
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167 The following functions were deprecated in Octave 6 and have been removed
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168 from Octave 8.
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169
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170 - Functions
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171
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172 Function | Replacement
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173 -------------|------------
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174 runtests | oruntests
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175
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176 - The environment variable used by `mkoctfile` for linker flags is now
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177 `LDFLAGS` rather than `LFLAGS`. `LFLAGS` was deprecated in Octave 6,
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178 and will be removed in a future version of Octave.
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179
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180 Summary of bugs fixed for version 8.1.0 (YYYY-MM-DD):
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181 ----------------------------------------------------
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182
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183 - Improved input validation and/or output handling for `poly`, `pinv`, `patch`,
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184 `fill`, `fill3`, `qp`, `datevec`, `textscan`, `sub2ind`, `qr`, `airy`,
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185 `regexp`, `dec2bin`, `dec2hex`, and many others.
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186 - Improved performance for `complex`, `fftw`, `delaunayn`, `isfield`, `tsearch`,
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187 sparse matrix exponentiation, other sparse operations, and many others.
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188 - Overhauled `@audiorecorder` and `@audioplayer` classes.
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189
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190 ### Old release news
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191
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192 - [Octave 7.x](etc/NEWS.7)
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193 - [Octave 6.x](etc/NEWS.6)
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194 - [Octave 5.x](etc/NEWS.5)
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195 - [Octave 4.x](etc/NEWS.4)
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196 - [Octave 3.x](etc/NEWS.3)
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197 - [Octave 2.x](etc/NEWS.2)
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198 - [Octave 1.x](etc/NEWS.1)