Integrals in Integrals are the same size now

Signed-off-by: bvanr <henkibrij@hotmail.com>
Created the ShowcaseViewDialog class to make ShowcaseView work for our DialogFragments

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Merge remote-tracking branch 'bas/basbranch3' into work
The logarithm's base now defaults to 10, fixes #135

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
The zoom level is now reset when deleting the expression (fixes #138)
Touch events are now passed through by the ShowcaseViewDialog

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Merge remote-tracking branch 'folkert/work' into work
Variable buttons now stay disabled after orientation switch (fixes #146)

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Some small fixes in ExpressionBeautifier

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Substitutions are now done after differentiating / integrating (fixes #145)

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Zoom level is now preserved when rotating the screen (fixes #144)

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
add legal notes
Merge remote-tracking branch 'arian/master' into work
An error is now shown when the expression evaluates to a too big number.
Also, different error messages are now shown for different errors.
Fixes #141

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Added an about dialog (fixes #10)

Signed-off-by: Mark Kamsma <mark@markkamsma.nl>
Tutorial library dependencies fixed
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Tutorial library dependencies fixed
Fractional parsing improved