Fix layout for changelog

CURA-8718

resources/texts/change_log.txt

@@ -1,5 +1,6 @@
-Arachne engine second beta
+[Arachne engine second beta]
 
+<h1>Arachne engine beta 2</h1>
 Our new Ultimaker Cura engine allows you to create parts with ground-breaking quality, strength, and speed. This is made possible by fundamentally redefining how the inside of a model is generated – through adaptive line widths and optimized line positioning.
 Earlier this year, we released the first beta of Ultimaker Cura Arachne engine. Which received an overwhelmingly positive response, thank you for all your feedback! 
 Since the first beta release we've been working on improving the Arachne engine. 
@@ -44,8 +45,7 @@ All print quality improvements from Ultimaker Cura 4.12 have been added.
 
 <i>Note: This is _not_ based on a specific stable version of the front-end of Cura (like '4.12.0' or similar), so there may be issues that have been solved or introduced since then that have little or nothing to do with the variable line width feature-set!</i>
 
-Arachne engine beta
-
+<h1>Arachne engine beta 1 </h1>
 This is the beta release of Ultimaker Cura's "Arachne" engine. The objective is to fill the available space better with walls, reduce variability in flow rate, preventing gaps and overextrusion and improving path planning by implementing variable line widths. This allows for a more consistent print and better fit to the specifications of the original 3D model.
 If you've tried this beta and want to give some feedback, please see the discussion here.
 This is a second preview, bringing the engine to a more stable state than the alpha that was released in December. This release should be more appropriate to tune profiles within preparation for the stable release. The stable release will still have its own beta in the same fashion as the ordinary release cycle.
@@ -107,7 +107,7 @@ The outer wall will no longer adjust its width or position if there are any inne
 - Fuzzy skin isn't implemented.
 - Connect Top/Bottom polygons isn't implemented.
 
-Arachne engine alpha
+<h1>Arachne engine alpha</h1>
 
 The Cura Team, as part of and with help from Ultimaker R&D in a more general sense, have been working on a large project that changes the core of how our slicing engine works.
 The goal is to have variable line widths (instead of static) for each extrusion, and better path-planning, in order to better fit the eventual printed part to the specifications.
@@ -125,10 +125,10 @@ Variable Line Strategy: How the walls are spread over the available space.
 - Distributed: Distributes the width variations equally over all walls.
 - Inward Distributed: Is a balance between the other two, distributing the changes in width over all walls but keeping the walls on the outside slightly more consistent.
 - Minimum Variable Line Width: The smallest line width, as a factor of the normal line width, beyond which it will choose to use fewer, but wider lines to fill the available space. Reduce this threshold to use more, thinner lines. Increase to use fewer, wider lines.
-Wall Transition Length: When transitioning between different numbers of walls as the part becomes thinner, a certain amount of space is allotted to split or join the wall lines.
-Wall Transition Angle: When transitioning between different numbers of walls as the part becomes thinner, two adjacent walls will join together at this angle. This can make the walls come together faster than what the Wall Transition Length indicates, filling the space better.
-Wall Transition Filter Distance: If it would be transitioning back and forth between different numbers of walls in quick succession, don't transition at all. Remove transitions if they are closer together than this distance.
-Maximum Extrusion Area Deviation: Influences extrusion line simplification. The maximum extrusion area deviation allowed when removing intermediate points from a straight line. Keeping it low may cause (too) little simplification to occur (with all the problems that causes), but if you increase this you may notice slight under- (or over-) extrusion in between straight parallel walls.
+- Wall Transition Length: When transitioning between different numbers of walls as the part becomes thinner, a certain amount of space is allotted to split or join the wall lines.
+- Wall Transition Angle: When transitioning between different numbers of walls as the part becomes thinner, two adjacent walls will join together at this angle. This can make the walls come together faster than what the Wall Transition Length indicates, filling the space better.
+- Wall Transition Filter Distance: If it would be transitioning back and forth between different numbers of walls in quick succession, don't transition at all. Remove transitions if they are closer together than this distance.
+- Maximum Extrusion Area Deviation: Influences extrusion line simplification. The maximum extrusion area deviation allowed when removing intermediate points from a straight line. Keeping it low may cause (too) little simplification to occur (with all the problems that causes), but if you increase this you may notice slight under- (or over-) extrusion in between straight parallel walls.
 
 * Removed/Renamed/Altered Settings
 - Print Thin Walls: Behaviour altered.
@@ -145,18 +145,18 @@ Not all initially planned sub-features are in yet, any subsequent non-patch rele
 - Bottom layers issue in spiralize mode.
 - Stringing when in spiralized mode.
 - Last bottom layer missing for some models.
-Support not being correctly generated. It might start mid-air or not providing enough support for some parts of the model.
-Gradual infill support not being correctly generated. Support walls don't seem to be printed well when gradual infill support is enabled. Ultimaker printers enable this by default for PVA.
-Combing in the wrong part when printing dual extrusion Visible, for example, when printing with dual extrusion with two different colors. E.g.: 'Bleeding' of red into white parts.
-Printed travel moves.
-Gaps between inner wall and skin.
-Z-Seam Sharpest Corner broken. The seam is not placed in the sharpest corner
-Small line width and overlap. When using the Center Deviation setting on a thin model some wall lines may overlap or leave a gap.
-Wall positioning is imprecise. On some models, the walls are not centered properly within the outline nor have the correct width.
-Connected and gradual infill results in overextrusion. When gradual infill and connect infill lines is enabled, it'll connect different pieces of infill on top of each other, causing overextrusion.
-Connect Top/Bottom polygon not working currently. The issue occurs when concentric is the infill pattern.
-Small travel line segments in infill/support. This is causing unnecessary traveling and stringing.
-Wrong Infill Layer Thickness. In combination with a higher Extra Infill Line Count, some parts are not generating infill lines.
-Inward/Distributed overextrusion. Seen on models with multiplied infill walls.
-Overlapping skin and alternating wall. The extra wall at each alternating step will overlap with the skin
-Assertion failure in SkeletalTrapezoidation. Can cause the engine to crash on certain models.
+- Support not being correctly generated. It might start mid-air or not providing enough support for some parts of the model.
+- Gradual infill support not being correctly generated. Support walls don't seem to be printed well when gradual infill support is enabled. Ultimaker printers enable this by default for PVA.
+- Combing in the wrong part when printing dual extrusion Visible, for example, when printing with dual extrusion with two different colors. E.g.: 'Bleeding' of red into white parts.
+- Printed travel moves.
+- Gaps between inner wall and skin.
+- Z-Seam Sharpest Corner broken. The seam is not placed in the sharpest corner
+- Small line width and overlap. When using the Center Deviation setting on a thin model some wall lines may overlap or leave a gap.
+- Wall positioning is imprecise. On some models, the walls are not centered properly within the outline nor have the correct width.
+- Connected and gradual infill results in overextrusion. When gradual infill and connect infill lines is enabled, it'll connect different pieces of infill on top of each other, causing overextrusion.
+- Connect Top/Bottom polygon not working currently. The issue occurs when concentric is the infill pattern.
+- Small travel line segments in infill/support. This is causing unnecessary traveling and stringing.
+- Wrong Infill Layer Thickness. In combination with a higher Extra Infill Line Count, some parts are not generating infill lines.
+- Inward/Distributed overextrusion. Seen on models with multiplied infill walls.
+- Overlapping skin and alternating wall. The extra wall at each alternating step will overlap with the skin
+- Assertion failure in SkeletalTrapezoidation. Can cause the engine to crash on certain models.